ECKey: adds tests for makeRandom
use cryptocoinjs/bs58
tests: remove h2b
crypto: add RIPEMD160 tests
crypto: use latest crypto-browserify
Merge pull request #229 from dcousens/ripemd

Browserify RIPEMD160
Merge pull request #228 from dcousens/b58

BS58 module
Merge pull request #223 from dcousens/rand

ECKey: adds tests for makeRandom