http://www.cnblogs.com/loulijun/archive/2012/3/6.html
proguard.cfg (No such file or directory)
When you create a project in Android. you may encounter such a problem. then search it and copy it to the suitable directory (/home/ghostli123/bravo/out/host/linux-x86/sdk/android-sdk_eng.ghostli123_linux-x86/tools/lib).