Merge pull request #413 from Microsoft/gradle

Clean up gradle file

Author: lostintangent

android/app/build.gradle

@@ -1,4 +1,4 @@
-apply plugin: 'com.android.library'
+apply plugin: "com.android.library"
 
 android {
     compileSdkVersion 23
@@ -11,16 +11,11 @@ android {
         versionName "1.0"
     }
 
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
+    lintOptions {
+        abortOnError false
     }
 }
 
 dependencies {
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:23.0.1"
     compile "com.facebook.react:react-native:0.19.+"
-}
+}