Issue 4324 - Add Gradle build config

README.md

Index: README.md
diff --git a/README.md b/README.md
index 4a78cef4f72945bd29fd910cb68b89e41ec22c18..e7e79eec7ebfff8f45925af383393b5eab446fdb 100644
--- a/README.md
+++ b/README.md
@@ -52,13 +52,38 @@ In the 'libadblockplus-android' directory run:
 
 This will generate *.aar library artifact in the 'target' directory. 
 
+Building with Gradle/Android Studio
+-----------------------------------
+
+### Requirements
+
+* [The Android SDK](http://developer.android.com/sdk)
+* Android SDK Build tools 22.0.1
+* [The Android NDK](https://developer.android.com/tools/sdk/ndk)
+
+Edit 'buildToolsVersion' in 'build.gradle' files if necessary.
+
+### Building from command-line
+
+In the project root directory create the file _local.properties_ and set
+_sdk.dir_ and _ndk.dir_ to where you installed it, e.g.:
+
+    sdk.dir = /some/where/sdk
+    ndk.dir = /some/where/ndk
+
+In the project root directory run:
+
+    ./gradlew assembleDebug
+
+This will generate *.aar library artifact in the 'libadblockplus-android/build/outputs/aar/' directory.
+
 ## Library tests
 
 ### Requirements
 
 Make sure _Library_ requirements are present.
 
-### Building
+### Building with Ant
 
 Set ANDROID_HOME environment variable to your Android SDK directory.
 
@@ -66,7 +91,7 @@ In the 'libadblockplus-android-tests' run:
 
     ant instrument
 
-### Testing
+### Testing with Ant
 
 1. Connect an Android device or start the Android Emulator.
 2. In the 'libadblockplus-android-tests' directory run:
@@ -93,4 +118,18 @@ To run specific **test method** run:
 
 For example:
 
-    ant testOnly -DtestClass=org.adblockplus.libadblockplus.tests.NotificationTest#testAddNotification
+    ant testOnly -DtestClass=org.adblockplus.libadblockplus.tests.NotificationTest#testAddNotification
+
+### Building with Gradle/Android Studio
+
+Make sure you've created the _local.properties_ file to build the library (see above).
+In the project root directory run:
+
+    ./gradlew assembleDebugAndroidTest
+
+This will generate *.apk in the 'libadblockplus-android-tests/build/outputs/apk/' directory.
+
+### Testing with Gradle/Android Studio
+
+You can select test class/method and click 'Run ..Test'. The library and test app will be
+compiled, installed to emulator/device and launched automatically.