ReST-based automatic documentation

[inureyes]

• For easier using and deeper understanding about the project, we need solid and synchronized documentation for the project.
• Also, tool-based documentation reduces the requirements for separated instruction site & technical documentations

Plan

• [x] Write concrete comment on source code
• [x] Match comments to be ReStructuredText format
• [x] Make documentation generation scripts
• [x] Setup readthedocs

[ragulpr]

http://wtte-rnn.readthedocs.io/en/master/ great work everybody!