Implemented the CreateVerifier function, and part of a unit test. Does not currently work.
Refactored CreateVerifier to also take a salt generating function and a hash function. Made RandomSalt() function for default saltgen. Plan is to make Verifier.New() be a new function which calls CreateVerifier with default slen, H() and saltgen(). Wrote and ran unit tests with test vector from appendix B of RFC 5054