Update README.md (typo fix)

I don't think Emacs is quite that far ahead of the curve.
Merge pull request #22 from nbouscal/patch-1

Update README.md (typo fix)
Update README to reflect flycheck changes

flycheck-hdevtools is now a separate Emacs package.
Merge pull request #26 from purcell/patch-2

Update README to reflect flycheck changes
Merge branch 'master' of https://github.com/bitc/hdevtools
Dump deps