install: Set up RVM.
install: Prevent RVM from touching my dotfiles.
install: Create an rvmrc.

This one will prevent RVM from touching my dotfiles.
install: If RVM is already installed, let the user know.
install: Create new helper for installing gems.
install: Install ruby 2.1 by default.
rvmrc: Increase download timeout to 20 seconds.

The default of 5 seconds was not enough for the server to respond.
install: Install proper binary ruby.
install: Prevent RVM from automatically install libs.
install: Ask before install a ruby.
install: Double check for ruby being installed.
install: Make sure RVM ruby is installed before installing gems.
install: Don't force binary rubies.

Since I fixed the curl timeout, I should let the user choose a compiled
install if they so desire.
install: Install bundler gem.
install: Don't install gollum automatically.
install: Correct the RVM install.
install: Fix type for RVM install.
install: Make sure rvm is in the PATH the first time.
install: Set up the RVM environment properly.
install: Use the newly installed ruby version.