Modified Ruby Version in Step 9, and added Step 10 to remove 'pry-byebug' gem which depends on Ruby 2.0
added background for Step 10
fixed issue #266 link
Merge pull request #296 from jasonngpt/updateOpenShiftdocs

Modified Ruby Version in Step 9, and added Step 10 to remove 'pry-byebug' gem which depends on Ruby 2.0