stop including old versions of ruby.

only require 1.9.3 and 2.0.0 branches.
stop requiring old versions of node.

only require 0.10 branch.
add rbenv-vars.
move ruby config into a separate module.
add handlebars npm module.
comment out nginx (plan to replace w/ openresty)
add personal manifest. start adding custom modules

added:

  * alfred
  * osx
  * postgresql
  * iterm
more module dependencies.