+To start the project, we will start with a basic Xcode project.
+Create a new Single View iOS Application with the name TipCalculator.
+Setup the project with Unit Tests, ARC and Stroyboards checked.
+Now that we have the basic project setup we need to add some ruby components
+to help with the project. By default Mac has ruby version 1.8.7 installed.
+Install and Configure Bundler
+The first component we need is Bundler. This will manage ruby dependencies for us.
+ $ sudo gem install bundler
+Bundler gives us commands and tools to manage the installed ruby libaries.
+To initalize bundler run the following command in the project directory.
+This command creates a file called a Gemfile.
+.. literalinclude:: ../code/TipCalculator/Gemfile