simple rvm version switcher

rvm_version_switched.sh

# add a .rvm file to APP_ROOT containing only the version
# e.g. 1.9.1

# add this to your .bashrc file
cd () {
command cd "$@";
if [ -f ./.rvm ]; then
 version=`cat ./.rvm`
 if [ `ruby -v | grep -c $version` == 0 ]; then
   rvm $version
   echo "switched to ruby $version"
 fi
fi
}