StatusFile missing from docs

[tommoor]

It's mentioned several times however there doesn't appear to be a definition for this object. Eg returned from repo.getStatus:

http://www.nodegit.org/api/repository/#getStatus

[johnhaley81]

You're right! https://.com/nodegit/nodegit/blob/master/lib/status_file.js needs to be decorated similar to how https://.com/nodegit/nodegit/blob/master/lib/convenient_hunks.js is broken out and decorated.