Added callback function to options.
Update examples and bump version to 1.1.1
Add onCellEnter & onClose callbacks.
Add live preview functionality.
Merge branch 'feature/more-callbacks' into develop
Bump version to 1.1.2.
Merge branch 'release/1.1.2'
Set background color of example color picker.
Rename callback() option to onSelect().
Bump version to 1.1.3.
Merge branch 'release/v1.1.3'