Bug 903245 : Support sharing of Contact via NFC ; r=reviews.

This Patch for Sharing the current contact information via NFC.
Contact application register the onpeerready event.
In Contact Application is opened a particular contact to be shared, 
NFC Device Paired with another device and the contact gets shrink 
and ready to share the current contact details to another device.
Swipe-up the contact. It transfers current contact information
(Name, Family-name, Address,Phone,Email).