index: add mnemonicToEntropy backwards function
Merge pull request #9 from dcousens/backwards

index: add mnemonicToEntropy backwards function
LICENSE: add self

As per @weilu's suggestion :)
Replace secure-random with crypto.randomBytes

https://github.com/dominictarr/crypto-browserify/pull/45
Andd dcousens as a contributor
bump version
README: fixes invalid package name
index: use pbkdf2-compat instead of cryptojs