copyright notice
refactoring, improved comments, handle grunt configs which match files. fixes #8
README
1.2.6
depend on ImageOptim-CLI 1.6.18
housekeeping
Merge branch 'master' into develop

* master:
  1.2.6
  README

Conflicts:
	package.json
README
handle paths containing tildes, such as '~/Desktop/directory'
.npmignore
refactoring, improved error handling