Added pelican-bootstrap3 theme
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  adding pure theme
  Add theme:storm
  update niu-x2 theme
  Add niu-x2 theme as a submodule
  Fix path issue for archive pages
  [IMP] Add language management for theme tuxlite_tbs
  Update base.html
  Add Elegant theme as submodule
  Update Plumage to version 0.3.
  Update README.rst
  Add pygments support
Updated pelican-bootstrap3 to newest version
Merge pull request #127 from DandyDev/master

Added pelican-bootstrap3 theme