bashrc: ssht completion
Various vim updates

* Use vundle for jellybeans colorscheme (with a little hack)
* Set jellybeans as default
* Make jellybeans transparent
* Use lightline rather than airline - faster, works with transparent
  jellybean
* Add YouCompleteMe (note - this requires lots of configuration),
  replaces OmniCppComplete.
* As per github's recommendation, no wrapping for blog posts (liquid)