readme cleanup, add crypto-browserify to dev deps

README.md

@@ -4,6 +4,6 @@ hdkey
 [![build status](https://secure.travis-ci.org/cryptocoinjs/hdkey.png)](http://travis-ci.org/cryptocoinjs/hdkey)
 [![Coverage Status](https://img.shields.io/coveralls/cryptocoinjs/hdkey.svg)](https://coveralls.io/r/cryptocoinjs/hdkey)
 
-A JavaScript component for [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki)(hierarchical deterministic keys). **API is very unstable at the moment. Don't even think about using this.** Should stabilize within the next few days.
+A JavaScript component for [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki)(hierarchical deterministic keys).
 
 Thanks to the active BitcoinJS team and their hard work - some code borrowed from it.

package.json

@@ -27,7 +27,8 @@
     "mocha-lcov-reporter": "0.0.1",
     "istanbul": "^0.2.10",
     "secure-random": "^1.0.0",
-    "mochify": "^0.9.3"
+    "mochify": "^0.9.3",
+    "crypto-browserify": "^2.1.8"
   },
   "dependencies": {
     "sha512": "0.0.1",