I just started the ruby.railstutorial.org book by Michael Hartl and have been working through the first chapter. I am using mac book OS X, Terminal, and Sublime Text. Every
I was finally able to deploy successfully to Heroku. Thanks to evanc3 for pointing me to an article on the Heroku site. It appears that I simply forgot to commit my Gemgile updates before deploying to Heroku. So for all of you just starting out, you need to make sure you commit your changes before deploying to Heroku.