Massive fixup of commit history

rebase hides a multitude of sins
keep brew packages up to date
get rid of imagemagick, use graphicsmagick
manage .puppet-lintrc
updating various Boxen components
sudoers privs for toggleBoxen
rolling back to puppet-ruby 7.3.0
quash some warnings
install plenv from homebrew
plenv needs perl-build
install libssh2
install Fluid
use my own fork of puppet-fluid with bugfix
pull latest version of Fluid
link patchHostgroup into /usr/local/bin
install rbenv-update plugin
typo fix
install rbenv-update plugin
Merge branch 'master' of https://github.com/hakamadare/our-boxen
link in tmux.conf