add .verify() for one-stop verification of a buffer against a hash

[candeira]

Rationale: .verify() will likely be the most frequent operation, so it should be a shared utility function, not something endlessly reimplemented.

There are tests (they pass) and the library is lint clean. However, I didn't run a zuul test because I didn't have credentials.

[daviddias]

@candeira try npm run test:browser:q for testing locally in a browser (change version of Chrome to the latest (nowadays is 47) ) https://github.com/jbenet/js-multihashing/blob/master/package.json#L10)

[candeira]

@diasdavid I tried, but npm run test:browser:q doesn't test locally, but just injects some values in environment variables, then calls run test:browser, which calls on zuul, which again requires saucelab credentials.

[daviddias]

@candeira you are right, forgot about that step :)

[harlantwood]

+1 for .verify(...)

[daviddias]

Hi @candeira, seems that this module has changed a ton since your PR, could you rebase it on top of current master?

Thank you!

[daviddias]

ping @candeira

[daviddias]

@candeira still interested in pushing this PR?

[hacdias]

@diasdavid is the idea of implementing the .verify() function still alive?