Merge pull request #198 from longbai/release_7.1.3

up gradle

Author: longbai

build.gradle

@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-task wrapper(type: Wrapper) {
-    gradleVersion = '2.5'
-}
+//task wrapper(type: Wrapper) {
+//    gradleVersion = '2.13'
+//}
 
 buildscript {
     repositories {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.3.1'
+        classpath 'com.android.tools.build:gradle:2.1.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files