v2.1.9 - -c and global eslint fixes

Fixes

• -c wasn't entirely fixed in 2.1.8 so this contains an official fix. ( #69 #75 )
• Eslint-Watch now will try to load a local version of eslint if it isn't there it will try to use global. ( #74 )
  • This is a temp fix. This was caused due to the fact that eslint-watch is using spawn instead of exec.