Building a simple Sinatra powered tic-tac-toe game as an example for teaching some friends.

App currently contains:

• app.rb - the application code
• Gemfile - specifies the gems this app relies on
• Gemfile.lock - automatically generated dependancy file
• views/ - this is the default folder for erb views
• layout.erb - this is the default layout to be used for all erb files
• public/ - this is the default folder for serving static assets
• Procfile - this tells Heroku or Foreman how to run the application