Review of .brew file
    bash completion by default
    grc colourify by default
    added a default config file for tmux
    Sensible default paths for Homebrew
Modify osx to avoid overriding important defaults like system name or
timezones.Modify and uncomment lines as needed
prompt: ansi colors + return status indicator
bootstrap.sh à la spf13: uses symlinks instead of rsync
.osx and .brew moved to init/osx, init/brew as it makes more sense
Monokai Soda color theme