Add unspentOutputsWithAddress: for Chain.com
Add send transaction API for Chain.com - requestForTransactionBroadcastWithData:
Add Chain unspents and send transaction APIs to BTCTransaction+Tests
Refactor BTCChain -> BTCChainCom
Add initWithToken: to BTCChainCom to set the API token
Run testSpendCoins test against BTCChainCom
Merge branch 'master' of github.com:mattmmatt/CoreBitcoin
updated README