add integration build to travis
fix integration test
Merge pull request #178 from bitcoinjs/integration-tests

Integration tests
syncscript: general cleanup
Address: consistent json formatting
Address/Script: consistent function ordering
Script: use PubKey objects not prebuilt Buffers
Transaction: rename hashTransactionForSignature to hashForSignature
Transaction: rename (de)serialize to [to/from]Buffer
Merge pull request #179 from dcousens/txscript

Transaction function naming and ordering