0.2.2 - Standalone components

• RemarkComponent, RemarkNodeComponent and RemarkTemplateDirective are now standalone and can be imported individually in other standalone components.
• RemarkModule can still be imported as well, for convenience. Note that it is not an NgModule anymore, but rather an array of the 3 components above (thus this update does NOT break compatibility with previous versions, as the code to import the module is completely unchanged).