zsh.d: Rename `homebrew` -> `homebrew.erb`
vim bundle: vim-json
Add `hg-prompt` source
zshrc: Change back to a plain shell file
zsh.d/homebrew: Add `zsh-syntax-highlighting` and `zsh-history-substring-search`
rvmrc: Auto-Update RVM
Rakefile: Major refactoring

* Don't symlink directories anymore, symlink/generate files individually,
  and create new directories. This solves the issue of templates in sub-directories

* Classes, and Bears, oh my! Need to make a gem.
Gemfile: Start wearing templates, wearing templates..
zsh.d/ssh:

* Add popular keys used for SSH Agent Forwarding to `keychain` automagically
* Fix an issue with SSH AUTH socket and tmux/screen