Feat A.1 - First use introduction

[toshify]

• [x] 马丽 picks up her phone and taps on a link in her messaging app. The Literacy App Prototype opens and displays a screen with an animation that encourages马丽 to wait for the web app to get ready.
• [x] Once the web app is ready, a screen with an animation indicating the expectation that 马丽 should tap an interactive icon is displayed. The icon is re-used on every screen in the app and has a symbol that indicates “listen”, “help”, “instructions” or “support”.
• [x] The "instructions" icon vibrates periodically to invite interaction
• [x] A short auto-played audio clip invites 马丽 to tap the interactive icon.
• [x] When 马丽 taps the icon, an instructions overlay is displayed over the Home screen
• [x] An audio clip plays explaining how tapping the icon is the way to get help or instructions throughout the web app, encouraging 马丽 to close the “instructions” mode by tapping the “close instructions”-icon.
• [x] 马丽 taps the icon again and the web app’s dashboard displays