Merged from develop
Update README.md
Added screenshot image
Merge branch 'master' of github.com:badsyntax/SassBeautify
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Updated screenshot image
Issue #1 - Allow settings to override environment path for command exec

Needed for plugin to work on machines with RVM.
Better error handling when executing command; added path separator to custom path; updated README with path setting
Update README.md
Update README.md
Proper fixes for supporting python 2 & 3 - In preparation for ST3 support!
Fixed displaying errors
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Update README.md
Update README.md
Update README.md
Added example scss file
Fixed whitespace
Fixed whitespace in JSON files
Added license