Utilize @ircmaxell function from password_compat to generate good salt.
PSR-2 formatting
Make Class abstract - should never instantiate class as all methods are
static; Add param sanity checking (a la ZF2 Scrypt::calc() method); Make
salt more friendly for hash by removing '$'
Comment spacing as that is preference and not PSR-2 defined
Put underscore back in, removed operator spaces, base64 encode user-given salt to make it all consistant
Merge pull request #21 from moderndeveloperllc/master

Use @ircmaxwell password_compat logic to generate salts; PSR-2 formatting; hash parameter sanity checks