Simplify .rvmrc

.rvmrc

@@ -1,17 +1 @@
-#!/usr/bin/env bash
-
-environment_id="ruby-1.9.2-p136@idkfa"
-
-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  "$environment_id"
-fi
-
-# Ensure that Bundler is installed, install it if it is not.
-if ! command -v bundle ; then
-   printf "The rubygem 'bundler' is not installed, installing it now.\n"
-   gem install bundler
-fi
+rvm use 1.9.2@idkfa --create