[Hyperledger Project TSC] Project proposal template draft

Vipin Bharathan

https://github.com/hyperledger/hyperledger/wiki/Proposals, I have added a link to draft 0.2 which can be commented on. I have added changes based on feedback from tsc meetings and list communication.

Expecting feedback from tsc members. Also, it would be good for current IBM/DAH proposal for DAH merger to follow this template if possible.