[#7] Py3 initial port of compiler.py file
[#7] Py3 initial porting on composer.py file
[#7] Py3 initial porting of game.py file
[#7] Py3 initital porting of image.py file
[#7] Py3 initital porting of nes_types.py file
[#7] Py3 initial porting of tests/__init__.py file
[#7] Py3 initial porting of tests/composer_test.py file
[#7] More py3 changes on tests/__init__.py file
[#7] add 3.2 , 3.3 and 3.4 python versions on tox.ini