Created recipe, instruction and ingredient classes to represent different aspects of a recipe. Completed getRecipe, addRecipe and getRecipesByCategory methods for the model.
Added xcode project file to .gitignore to avoid conflicts
changes to git ignore
removed a git ignore
Merge branch 'master' of ssh://github.com/aoconnr/iOSCookBook

Conflicts:
	iOSCookBook.xcodeproj/project.pbxproj