docs(README): Updated readme to reflect recent developments
fix(WidgetManager): Fix linting error - forgotten semi-colon
feat(Widgets): Added Widget object. Adapted WidgetManager, ForwardDash to use new approach
docs(WidgetManager): Change README to reflect new approach to define widgets
feat()
fix(ClockWidget): Fix error if no config object is set. Added helper function to check if empty object
docs(Widgets): Updated READMEs for all widgets to show new usage syntax