Enhance sample app

[piyushjohnson]

Updated sample app ✌️ with following features

• Loading multiple resources (quotes) from API page-by page 🔍.
• Updated app to use material design 🎉 .
• Also included circular reveal animation on quote card between page change .
• To show loading state, progress bar ⚡ is shown till quote loads

https://user-images.githubusercontent.com/34616118/117104706-42aaf100-ad9a-11eb-8dc9-64be5dedea3e.mp4

[hadiyarajesh]

This seems great enhancement. Great work.