added fix usings command
add feature to README
Quote curl parameters properly.
Merge pull request #104 from robewald/master

Quote curl parameters properly.
Merge remote-tracking branch 'refs/remotes/github/master' into develop
Merge branch 'fixusings' of https://github.com/nosami/omnisharp-emacs into nosami-fixusings
Refactor "fix usings" logic a bit

- make the worker return ambiguous results to the interactive wrapper
  function. This is more idiomatic to the codebase, but ideally the
  worker should just return its result so the worker stays very
  general. I'm too lazy to refactor that much since it's not a strict
  rule in the codebase (I think it should be though).
- use `-if-let` instead of `setq` to stay more functional. Just a style
  preference which doesn't matter much.
- hide/destroy any previous "ambiguous results" buffer if there are no
  ambiguous results to display. I got confused by this and decided to
  improve it a bit.
Merge branch 'refs/heads/nosami-fixusings' into develop