Added Code Snippets for retain,assign property,UItableView delegate and datasource, allow dismiss from any view

Added Code Snippets for:
-retain property (shortcut rrr)
-assign property (shortcut aaa)
 -UItableView delegate and datasource (shortcut ttt)
-allow dismiss keyboard from any view (diskey)
-Create IBOutlets (keyboard shortcut (ibo)

Signed-off-by: Wil Ferrel <Wferrel@taximagic.com>