Updated README.
- Fixed premake4.lua script.
- Fixed debug and exceptions in Memory.cpp
- Fixed documentations in Memory.h
- Fixed type returning in Memory.h (AProNew)
- Set that Memory Tracker can be turned on only in debug mode.
- Added --with-memorytracker option to turn on the memorytracker.
- Added --wall option to turn on every --with options.
- Added some help in README.