自从升级了1.0 RC版本的android studio 后，github上的一些工程在import的时候gradle就开始报错了。解决办法如下：
来自stackoverflow的帖子：http://stackoverflow.com/questions/27078075/gradle-dsl-method-not-found-runproguard
If you are using version 0.14.0 or higher of the gradle plugin, you should replace "runProguard" with"minifyEnabled" in your build.gradle files.
runProguard was renamed to minifyEnabled in version 0.14.0. For more info, seehttp://tools.android.com/tech-docs/new-build-system