Made message appear if no images are found

Only appears if the user has no images. Prompts the user to tap the add image button. When they do so a message describing the take and choose picture buttons appears. Lines are drawn from the message to the buttons.
Forgot the sync message! Added it.
Made lines to buttons be drawn with core animation

Much nicer looking and animation is super smooth
Made the welcome message fade in

Looks more smooth and better draws attention when the message changes
Merge pull request #56 from montehurd/visualOnFirstLogin

Made messages appear if no images are found
Add image toggle tapped quickly bug

The welcome message could get out of sync in this case
Merge remote-tracking branch 'monte/visualOnFirstLogin'
Add image toggle tap while refreshing caused welcome msg out of sync

Made it check the toggle state when the refresh ends so it chooses appropriate msg
Merge remote-tracking branch 'monte/visualOnFirstLogin'