add MessageDb
fix title print
linking socket with leveldb
getMessages working
fix multiple handlers
add example of websocket API use
chat example working with SINs
working towards verifying message sigs
fix tests and make it work with encryption & sigs
update bitcore version
add socket server test
make sync work
dont broadcast sync
update package
make message broker off by default
add small docs
Merge pull request #143 from maraoz/add/SIN-broker

Add encrypted message broker and chat example
merge