Merge in latest changes from Group 17 repo.
Few changes here,
- Delete unnecessary files.
- Added INDENT / DEDENT support in Hakaru.g4.
- Added HakaruToTensorFlow.java (main translator program).
- Added HakaruToTensorFlowListener.java (Listener subclass of HakaruBaseListener). This is where the code generation functions are overridden (e.g. enterFuncdef).