Bug 903245 : Support sharing of Contact via NFC

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).
1. Built-in contact2vcard.js for conversion contact to vCard
2. I changed Vcard Version and KEY id of Vcard from Small Case to Upper Case
3. SetImmediate() is not supporting, 
4. All the Implementation in contact.js