Update Whitelisting for CORs

Update whitelisting to send back the correct params for OPTIONS requests
Merge pull request #3 from blakebyrnes/Whilelist-Changes

Update Whitelisting for CORs (Blake pull request)
CORS fix to implement allowedHeaders for Content-Type
Merge pull request #4 from blakebyrnes/master

Add Push notifications
Fix typo
Add device_types to urban airship payload
Merge branch 'pull'
Separate production pushes from test