Move platform / computer specific profile code

After reading https://news.ycombinator.com/item?id=8487840, I learned
about using `hostname` and `uname` to improve my dotfiles.

.bashrc -> profile -> .bashrc_uname -> .bashrc_hostname ->
.bashrc_private
Change tmux status line to blue
Add .bashrc_private to gitignore
Add pandoc and credentials to gitconfig

Supports using pandoc to diff word files (though, I could not get it
working because of unsupported characters in my file. YMMV.

The credentials is set to use osxkeychain. I don't know how this will
affect my Linux boxes...
Add dash keybindings to .vimrc
Add working state of git to bash_profile
Add scss_lint support to syntastic
Update config files from cowboy
Add my scripts and cowboys
Move dotfiles to link
Add psql to MacBookPro
Add cowboy dotfiles command
Move dotfiles to bin
Make dotfiles executable
Fix quoting issues in link/copy