Update API documentation.

Signed-off-by: Tanzeel Kazi <me@tanzeelkazi.com>
Add specPending to the spec helper.

 - Add the specPending method to aid in
   tagging pending specs as current Jasmine
   release does not provide for it.

Signed-off-by: Tanzeel Kazi <me@tanzeelkazi.com>
Mark the spec for TK.Data.Collection as pending.

Signed-off-by: Tanzeel Kazi <me@tanzeelkazi.com>