Initial commit
first commit
done signIn and signUp
KeyChain works now
start over
start with left slide design
update the Sign Controller done
from menu to CheckoutList works
from menu to Group List works
works but not perfect:
    1. there is a problem when back from Group Detail to Group List
update the menu information
add me infomartion page
fix no creator issue when create a group
group search works
hide the keyboard when search input done
done design search result cell
join group done
rm search from checkout list page
add checkotu done
rename app to share