Tip Calculator Initial Submit
Merge branch 'master' of https://github.com/ronaldyang/CodePath

Conflicts:
	TipCalculator.xcodeproj/project.pbxproj
	TipCalculator/SettingViewController.h
	TipCalculator/SettingViewController.m
	TipCalculator/SettingViewController.xib
	TipCalculator/TipViewController.m
	TipCalculator/TipViewController.xib