added directories and code for custom zsh configuration.
adding sample zsh configs.
updated .gitignore
automatically load RVM or rbenv.
added zsh aliases. Moved other files but left symlinks for backwards compatibility.
Merge branch 'master' into zsh

* master:
  yankring history should be hidden.
  added gemrc and updated documentation.
simplifying paths for zsh customization.
updated .gitignore for new zsh paths.
Removed brew and github plugins.

ZSH was becoming slow. Research suggested these plugins were to blame.

http://superuser.com/questions/236953/zsh-starts-incredibly-slowly
merge master
Less Colors for Man Pages
Upgraded syntastic; Removed javaScriptLint plugin - replaced with syntastic
Replace showmarks due to deleted repo by @garbas [Close #39]
Merge pull request #38 from irrationalfab/master

Less Colors for Man Pages
Add support for ~/.vimrc.after
Remove semicolon mapping; semicolon is used to repeat last find command
Better colors for manpage search as suggested by @irrationalfab
Added ,gf - go to file in vertical split
Upgrdae fugitive and solarized
Upgraded ctrlp