Proto commits in sugarchain-project/sugarchain

These 3 commits are when the Protocol Buffers files have changed:

Commit:a31fd99
Author:cryptozeny
Committer:cryptozeny

Sugarchain: fix braning main

The documentation is generated from this commit.

Commit:c4084c2
Author:fanquake

Specify Protobuf version 2 in paymentrequest.proto

Commit:a41d5fe
Author:Gavin Andresen
Committer:Gavin Andresen

Payment Protocol: X509-validated payment requests Add support for a Payment Protocol to Bitcoin-Qt. Payment messages are protocol-buffer encoded and communicated over http(s), so this adds a dependency on the Google protocol buffer library, and requires Qt with OpenSSL support.