Change Browserify results to 'bitcoin', not 'Bitcoin'
Merge pull request #265 from hobofife/master

Change Browserify results to 'bitcoin', not 'Bitcoin'
Message: allow base64 strings as input
tests: avoid unnecessary .ok
Transaction: add comment to explain -1 on add*
Merge pull request #266 from dcousens/mesb64

Message: allow base64 strings as input
tests: code formatting
Wallet: remove txId:index storage for spent outputs
Wallet: store txHash, vout separately instead of "from: txid:vout"
bufferutils: add Buffer reverse
Wallet: revert 2f00c9a
Wallet: consistent variable naming
Wallet: rename outputs to unspentsMap
Wallet: refactor to use Array unspents solely, deprecating unspentsMap
tests: avoid use of deprecated APIs