Add Robocoin to projects utilizing BitcoinJS
HDNode: avoid walking bip32 object
package: remove testling
README: better wording
README: remove testling badge
Merge pull request #319 from thallium205/patch-1

Add Robocoin to projects utilizing BitcoinJS
Merge pull request #324 from bitcoinjs/notestling

package: remove testling
Merge pull request #322 from bitcoinjs/scriptexp

Script Is* functions
network: add failing tests for gamerscoin, viacoin and zetacoin
HDNode: add optional network flag to import functions
tests: remove unused testing data
tests: add test for non-matching network
HDNode: move isPrivate logic
remove base58check

Use bs58check package solely from here on.
rename Message to message
crypto: remove Hmac* exposure in API
crypto: re-work fixtures for simplicity
remove deprecated functionality
Transaction/TxBuilder: move all param coercion to TxBuilder
Transaction/RawTx: renames TxBuilder to Transaction