Added support to iPad

1) Artists List
2) Albums List
3) Now Playing View
4) Login Screen
5) Youtube View
Handled network connectivity in parse

Songs will get saved eventually when network becomes available.
Merge branch 'iPadSupport'
Merge branch 'master' of https://github.com/githubosu/iMusic

Conflicts:
	iMusic/Main.storyboard
	iMusic/iMusic-Info.plist