Investigate metrics for code quality

[gsarma]

The most valuable contribution would be a system for identifying things like code complexity and code smells in Python and displaying them on developers' machines on-demand for individual files or for the entire code base. A tool that only identifies PEP-8 compliance is not needed.

A web platform that integrates with Travis-CI and/or Github would also be valuable.

Exit criteria:

• a set of notes on metrics worth using and tools that compute them
• a short presentation elaborating on the notes

[1adityachoudhary]

@mwatts15 you asked me to look into this, please elaborate, I would like to make a pull request.