update gradle build script

Author: halzhang

build.gradle

@@ -3,26 +3,27 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.4'
+        classpath 'com.android.tools.build:gradle:0.5.+'
     }
 }
 apply plugin: 'android-library'
 
 dependencies {
+    compile fileTree(dir:'libs',include:'*.jar')
 }
 
 android {
-    compileSdkVersion 3
-    buildToolsVersion "3"
+    compileSdkVersion 17
+    buildToolsVersion "17"
 
     defaultConfig {
-        minSdkVersion 3
-        targetSdkVersion 3
+        minSdkVersion 7
+        targetSdkVersion 16
     }
     sourceSets {
         main {
             manifest.srcFile 'AndroidManifest.xml'
-            java.srcDirs = ['src','examples']
+            java.srcDirs = ['src']
             resources.srcDirs = ['src']
             aidl.srcDirs = ['src']
             renderscript.srcDirs = ['src']