Add ability to show modal for some specific case

• Add showModalCase prop to define cases in which to show the modal
• New prop (actionType) with value "create" pr "edit" is sent to the modal component

v0.1.2

The release includes:

• fix issues with duplicated keys for events
• possibility to configure the amount of horizontal space (in pixels) between events by eventSpacing property

v0.1.1

export style.css
add lint

v0.1.0

v0.1.0 of the react-week-calendar