basic ui layout
test buttons have actions
test label initializes with 0
Merge branch '2' of github.com:hbohlmann/Converter_Objc

Conflicts:
	.gitignore
	Converter.xcodeproj/project.pbxproj
	Converter/Base.lproj/Main.storyboard
	Converter/ViewController.h
	Converter/ViewController.m
	ConverterTests/NumberpadTest.m
	Podfile