Make it easier to develop and run this

[c2h5oh]

1. main.py was using \r\n Windows line breaks, which cause it not to run on Linux. \n will work on both. Fixed the same for README - for consistency. All other files were already using \n
2. All requirements needed to run code in it's current form added to requirements.txt file
3. Added a convenient Makefile that will install all deps for you make install-deps or run it make generate-coverage