chrono-sync2013: Require protobuf locally; add SyncState class to conform to CCL API; test-chrono-chat:Use ChronoSync2013.SyncState for sendInterest method; index: enabled ChronoSync2013
Merge remote-tracking branch 'upstream/master' into chrono-sync2013
digest-tree: fixed hash interoperability with ndn-cpp
chrono-sync: renaming inst to interest
digest-tree: digest tree node sorting redo based on ChronoChat-JS
removed chrono-chat test in browser
Merge pull request #48 from zhehaowang/chrono-sync2013

Chrono sync2013