Added note on SublimeLinter.
Fix link to Contribute page.
Update license page with license.
Fix header to comply with the styleguide.
Use the :pep: tag instead of directly linking PEPs
Use code tags where needed.
No need to say 'PEP 8' twice.
Declare code block language, fix formatting
Highlight examples as ReStructuredText.
more code tags.
Merge pull request #297 from kuyan/master

Formatting, code highlighting fixes.