javascript v0.0.1-alpha.4

What’s New:

• added addProgramListener and removeProgramListener API for getting published widgets in real time.
• added widget API’s namely getPostedWidgets, getWidgets, getWidget, getWidgetsInteractions, addWidgetListener, removeWidgetListener, createWidgetImpression, getUnclaimedWidgetInteractionsRewards, createWidgetInteraction, updateWidgetInteraction, getWidgetInteractions, claimPredictionWidgetRewards.
  Refer javascript widgets documentation for more details.