Install tmux/prompt files as scripts
Update terminal rendering for bash
Add usage instructions for terminal/tmux
Fix font patching instructions for OS X

Closes #46.
Add troubleshooting info for iTerm2 question mark issue

Closes #27.
Refs #48.
Add troubleshooting info about NameError in MacVim

Refs #48.
Add troubleshooting info about OSX ImportError

Closes #39.