Add contributing.md
Move utility files
Merge branch 'dev' into first_website
Merge remote-tracking branch 'upstream/dev' into first_website
fix require path
Fix travis
Merge
Update changelog
Fix travis
Fix
Fix jsHint errors
Merge pull request #16 from andrerod/fix_jshint

Fix jshint errors
Merge pull request #460 from andrerod/first_website

Move utility files to util folder and add CONTRIBUTING.md