update script output

* name ansi escape code variables
* snazzy Ϟ and ✓ symbols for info and success output
* further indent homebrew installation output
add git aliases
add haskell tools
bind ^R to incremental reverse history search
bind ^X^E to open command editor
prefer homebrew-installed trash utility to custom function
add git diff, hist, and status aliases
add signify vim plugin
annotate nh, cs, pp vim shortcuts
add shortcut to remove "smart" characters (quotes, dashes, ellipsis)
add psgrep shell function
work aliases
clean up dotfile installation script