reindex option for sync
move sync to a class for testing
transaction exploding from blocks
Merge pull request #1 from maraoz/feature/prototype-p2p

Feature/prototype p2p
fix bug in drop DBs + Transation with many fields in mongo
transaction syncing working!
tx syncing v2
TX API working + sync
readme updated
Merge branch 'feature/TX-API' of github.com:matiu/mystery
p2p handling of inv for blocks and transactions