Gradle:http://www.gradle.org/

Gradle is build automation evolved. Gradle can automate the 
building, testing, publishing, deployment and more of software packages or other types of projects such as 
generated static websites, generated documentation or indeed anything else.

http://www.gradle.org/downloads

set the gradle/bin to system PATH.

export PATH=${PATH}:/Users/pengjianqing/Documents/Android/gradle-1.6/bin 

when first time run gradle tasks,it will start some install automatically.

Download http://repo1.maven.org/maven2/com/android/tools/build/gradle/0.4/gradle-0.4.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/gradle-model/0.4/gradle-model-0.4.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/builder/0.4/builder-0.4.pom
Download http://repo1.maven.org/maven2/net/sf/proguard/proguard-gradle/4.9/proguard-gradle-4.9.pom
Download http://repo1.maven.org/maven2/net/sf/proguard/proguard-parent/4.9/proguard-parent-4.9.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/builder-model/0.4/builder-model-0.4.pom
Download http://repo1.maven.org/maven2/com/android/tools/sdklib/22.0/sdklib-22.0.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/builder-test-api/0.4/builder-test-api-0.4.pom
Download http://repo1.maven.org/maven2/com/android/tools/sdk-common/22.0/sdk-common-22.0.pom
Download http://repo1.maven.org/maven2/com/android/tools/ddms/ddmlib/22.0/ddmlib-22.0.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/manifest-merger/22.0/manifest-merger-22.0.pom
Download http://repo1.maven.org/maven2/org/bouncycastle/bcpkix-jdk15on/1.48/bcpkix-jdk15on-1.48.pom
Download http://repo1.maven.org/maven2/net/sf/proguard/proguard-base/4.9/proguard-base-4.9.pom
Download http://repo1.maven.org/maven2/com/android/tools/common/22.0/common-22.0.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpclient/4.1.1/httpclient-4.1.1.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcomponents-client/4.1.1/httpcomponents-client-4.1.1.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/project/4.1.1/project-4.1.1.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpmime/4.1/httpmime-4.1.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcomponents-client/4.1/httpcomponents-client-4.1.pom
Download http://repo1.maven.org/maven2/com/android/tools/layoutlib/layoutlib-api/22.0/layoutlib-api-22.0.pom
Download http://repo1.maven.org/maven2/com/android/tools/dvlib/22.0/dvlib-22.0.pom
Download http://repo1.maven.org/maven2/org/apache/commons/commons-compress/1.0/commons-compress-1.0.pom
Download http://repo1.maven.org/maven2/org/apache/commons/commons-parent/11/commons-parent-11.pom
Download http://repo1.maven.org/maven2/org/apache/apache/4/apache-4.pom
Download http://repo1.maven.org/maven2/net/sf/kxml/kxml2/2.3.0/kxml2-2.3.0.pom
Download http://repo1.maven.org/maven2/kxml2/kxml2/2.3.0/kxml2-2.3.0.pom
Download http://repo1.maven.org/maven2/org/bouncycastle/bcprov-jdk15on/1.48/bcprov-jdk15on-1.48.pom
Download http://repo1.maven.org/maven2/com/google/guava/guava/13.0.1/guava-13.0.1.pom
Download http://repo1.maven.org/maven2/com/google/guava/guava-parent/13.0.1/guava-parent-13.0.1.pom
Download http://repo1.maven.org/maven2/org/sonatype/oss/oss-parent/7/oss-parent-7.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcore/4.1/httpcore-4.1.pom
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcomponents-core/4.1/httpcomponents-core-4.1.pom
Download http://repo1.maven.org/maven2/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.pom
Download http://repo1.maven.org/maven2/org/apache/commons/commons-parent/5/commons-parent-5.pom
Download http://repo1.maven.org/maven2/commons-codec/commons-codec/1.4/commons-codec-1.4.pom
Download http://repo1.maven.org/maven2/com/android/tools/build/gradle/0.4/gradle-0.4.jar
Download http://repo1.maven.org/maven2/com/google/guava/guava/13.0.1/guava-13.0.1.jar
Download http://repo1.maven.org/maven2/com/android/tools/common/22.0/common-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/build/builder-model/0.4/builder-model-0.4.jar
Download http://repo1.maven.org/maven2/com/android/tools/build/gradle-model/0.4/gradle-model-0.4.jar
Download http://repo1.maven.org/maven2/org/bouncycastle/bcprov-jdk15on/1.48/bcprov-jdk15on-1.48.jar
Download http://repo1.maven.org/maven2/org/bouncycastle/bcpkix-jdk15on/1.48/bcpkix-jdk15on-1.48.jar
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpcore/4.1/httpcore-4.1.jar
Download http://repo1.maven.org/maven2/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar
Download http://repo1.maven.org/maven2/commons-codec/commons-codec/1.4/commons-codec-1.4.jar
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpclient/4.1.1/httpclient-4.1.1.jar
Download http://repo1.maven.org/maven2/org/apache/httpcomponents/httpmime/4.1/httpmime-4.1.jar
Download http://repo1.maven.org/maven2/net/sf/kxml/kxml2/2.3.0/kxml2-2.3.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/layoutlib/layoutlib-api/22.0/layoutlib-api-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/dvlib/22.0/dvlib-22.0.jar
Download http://repo1.maven.org/maven2/org/apache/commons/commons-compress/1.0/commons-compress-1.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/sdklib/22.0/sdklib-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/ddms/ddmlib/22.0/ddmlib-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/build/builder-test-api/0.4/builder-test-api-0.4.jar
Download http://repo1.maven.org/maven2/com/android/tools/sdk-common/22.0/sdk-common-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/build/manifest-merger/22.0/manifest-merger-22.0.jar
Download http://repo1.maven.org/maven2/com/android/tools/build/builder/0.4/builder-0.4.jar
Download http://repo1.maven.org/maven2/net/sf/proguard/proguard-base/4.9/proguard-base-4.9.jar
Download http://repo1.maven.org/maven2/net/sf/proguard/proguard-gradle/4.9/proguard-gradle-4.9.jar
The TaskContainer.add() method has been deprecated and is scheduled to be removed in Gradle 2.0. Please use the create() method instead.

Groovy:http://groovy.codehaus.org/

Groovy...
  * is an agile and dynamic language for the Java Virtual Machine
  * builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk
  * makes modern programming features available to Java developers with almost-zero learning curve
  * provides the ability to statically type check and statically compile your code for robustness and performance
  * supports Domain-Specific Languages and other compact syntax so your code becomes easy to read and maintain
  * makes writing shell and build scripts easy with its powerful processing primitives, OO abilities and an Ant DSL
  * increases developer productivity by reducing scaffolding code when developing web, GUI, database or console applications
  * simplifies testing by supporting unit testing and mocking out-of-the-box
  * seamlessly integrates with all existing Java classes and libraries
  * compiles straight to Java bytecode so you can use it anywhere you can use Java