Convert make to python

[atemate]

Pros:

1. python script is cross-platform (make won't work on windows)
2. python script is much more readable
3. python script gives more control

[asvetlov]

I suggest taking a look on http://www.pyinvoke.org
I used this tool, works like a charm.
Benefits:

• Provides battle-tested, documented and well-supported instrument instead of home-made solution (which may be good as well but requires more work on edge cases etc, you know what I mean).
• out-of-the-box supports command parameters and options
• supports code completion out-of-the-box.
• I really love context.cd() and context.run() helpers, they are very handly.
  Disadvantages:
• make is much more common tool (not sure if data scientists know it well though)
• you have to pip install invoke before usage

[atemate]

@asvetlov thank you for your proposal! please see the alternative PR that uses pyinvoke: #9

[atemate]

Closing as for now we decided to stick with Makefile