Adding travis-ci configuration.
Adding Travis badge to README; Updating travis script to install dependencies
Set LLVM_CONFIG_PATH in travis build.
Use lastest llvmpy build for Travis.  Needed for llvm-3.3 support.
Install llvmpy without pip.
Use public github url for llvmpy.
Build LLVM from source to enable RTTI.
Merge branch 'master' of github.com:ucb-sejits/ctree
move travis button below description
skip verbose untar