My rvmrc file

.rvmrc

#!/usr/bin/env bash

# First we specify our desired <ruby>[@<gemset>], the @gemset name is optional.
environment_id="ruby-1.9.3-p0@wafflehunter"

#
# First we attempt to load the desired environment directly from the environment
# file, this is very fast and efficicent compared to running through the entire
# CLI and selector. If you want feedback on which environment was used then
# insert the word 'use' after --create as this triggers verbose mode.
#
if [[ -d "${rvm_path:-$HOME/.rvm}/environments" \
  && -s "${rvm_path:-$HOME/.rvm}/environments/$environment_id" ]] ; then
  \. "${rvm_path:-$HOME/.rvm}/environments/$environment_id"
else
  # If the environment file has not yet been created, use the RVM CLI to select.
  rvm --create use  "$environment_id"
fi

# Ensure that Bundler is installed, install it if it is not.
if ! command -v bundle >/dev/null; then
  printf "Installing bundler.\n"
  gem install bundler -v 1.0.18
fi