Fix calculation of account balance.
Added Peerunity version to the "user agent" string
Merge pull request #65 from sigmike/peerunity_user_agent

Added Peerunity version to the "user agent" string
Merge pull request #47 from glv2/account-balance

Fix calculation of account balance
Add raw transactions RPC.

Functions added:
- listunspent
- getrawtransaction
- decoderawtransaction
- createrawtransction
- signrawtransaction
- sendrawtransaction
Fix signrawtransaction and sendrawtransaction RPC calls to support multisig redeem scripts.
Add test/documentation for 2/2 multisig address.
Add test/documentation for 2/3 multisig address.
Add support for batch JSON-RPC.
Add test/documentation for JSON-RPC (simple and batch).
Add address and account in listunspent RPC.
Add an optional parameter to the sendrawtransaction RPC indicating wether to check the transaction inputs.
Add transaction time in the getrawtransaction RPC.