add licence
add sample project for 5.1
Merge branch 'master' of https://github.com/mixi-inc/iOSTraining
add homework for 4.1 and images
add image
remove answer for homework 4.1
4.4の初期状態を追加
4.4のheader, footerが終わった所まで
4.4の画像とサンプルプロジェクト追加
画像修正
modify agenda
add images and sample project for 5.1
modify image for 5.1
Merge https://github.com/mixi-inc/iOSTraining