Use Case: App summary card

[cherukumilli]

App summary card should display the following:

• App icon field that displays a 192x192 icon
  • crawl the app's URL and get this icon from path in the mainfest.json file
• Rank label followed by the rank number
  • get this from the DB or github
• Reviews
  • get this from the DB or github
• Install button
  • clicking on the Install button should add the app to the user's home screen