Merge pull request #59 from scowalt/master

Fixed bug with nav bar in playground mode
Fix the editor settings popover dismissing when clicking in it [skip ci]
Merge pull request #60 from neelabhg/fix_editor_settings_popover_dismiss

Fix the editor settings popover dismissing when clicking in it
Add contributors to readme
Changed footer about [skip ci]
Merge pull request #61 from neelabhg/readme_about_changes

Readme and about footer changes