Use rvm in a shell script

gistfile1.sh

#!/usr/bin/env bash

# Xcode scripting does not invoke rvm. To get the correct ruby,
# we must invoke rvm manually. This requires loading the rvm 
# *shell function*, which can manipulate the active shell-script
# environment.
# cf. http://rvm.io/workflow/scripting

# Load RVM into a shell session *as a function*
if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then

  # First try to load from a user install
  source "$HOME/.rvm/scripts/rvm"

elif [[ -s "/usr/local/rvm/scripts/rvm" ]] ; then

  # Then try to load from a root install
  source "/usr/local/rvm/scripts/rvm"
else

  printf "ERROR: An RVM installation was not found.\n"
  exit 128
fi

# rvm will use the controlling versioning (e.g. .ruby-version) for the
# pwd using this function call.
rvm use .

# aaaand your stuff here!

I copy this whole file into run script but not working on Xcode8?