Cleanup and update build.gradle files for modules

* Updates plugin names to new versions (previous versions were deprecated and will break soon)
* Update build and compile SDK versions to latest
* Remove unnecessary gradle plugin version and repositories declarations, as these are set via the top-level build.gradle file
* Update target SDK version to latest 21
* Specify min and target SDK versions that match the manifests

Tested the sample and everything still works as normal :)

dynamicgrid/AndroidManifest.xml

@@ -6,6 +6,6 @@
 
     <uses-sdk
             android:minSdkVersion="8"
-            android:targetSdkVersion="18"/>
+            android:targetSdkVersion="21"/>
 
 </manifest>

dynamicgrid/build.gradle

@@ -1,32 +1,23 @@
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:0.13.+'
-    }
-}
-
-apply plugin: 'android-library'
-
-repositories {
-  mavenCentral()
-}
+apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 19
-    buildToolsVersion "19.1"
+    compileSdkVersion 21
+    buildToolsVersion "21.1.1"
+
+    defaultConfig {
+        minSdkVersion 8
+        targetSdkVersion 21
+    }
 
     sourceSets {
-       main {
-                manifest.srcFile 'AndroidManifest.xml'
-                java.srcDirs = ['src']
-                resources.srcDirs = ['src']
-                aidl.srcDirs = ['src']
-                renderscript.srcDirs = ['src']
-                res.srcDirs = ['res']
-                assets.srcDirs = ['assets']
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            java.srcDirs = ['src']
+            resources.srcDirs = ['src']
+            aidl.srcDirs = ['src']
+            renderscript.srcDirs = ['src']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
         }
     }
 }

example/AndroidManifest.xml

@@ -4,7 +4,7 @@
           android:versionCode="1"
           android:versionName="1.0">
 
-    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18"/>
+    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="21"/>
     <application
             android:label="@string/app_name"
             android:icon="@drawable/ic_launcher">

example/build.gradle

@@ -1,25 +1,13 @@
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:0.13.+'
-    }
-}
-
-apply plugin: 'android'
-
-repositories {
-    mavenCentral()
-}
+apply plugin: 'com.android.application'
 
 dependencies {
+    compile project(':dynamicgrid')
     compile 'com.android.support:support-v4:19.+'
 }
+
 android {
-    compileSdkVersion 19
-    buildToolsVersion "19.1"
+    compileSdkVersion 21
+    buildToolsVersion "21.1.1"
 
     sourceSets {
         main {
@@ -32,8 +20,4 @@ android {
             assets.srcDirs = ['assets']
         }
     }
-
-    dependencies {
-        compile project(':dynamicgrid')
-    }
 }