修改插件包名，dexknife改用maven引入，升级到1.6.2

Author: ceabie

DexKnifePlugin/dexknife-plus/build.gradle

@@ -25,6 +25,7 @@ configurations {
 dependencies {
     compile gradleApi()
     compile localGroovy()
+    compile 'com.ceabie.dextools:gradle-dexknife-plugin:1.6.2'
     provided 'com.android.tools.build:builder:2.1.3'
     provided 'com.android.tools.build:gradle-core:2.1.3'
 }