Added couple of images of the app

[AjayThakur12]

Description

Added PowerUp app images

Fixes #368

Type of Change:

• Documentation

Code/Quality Assurance Only

• This change requires a documentation update (software upgrade on readme file)

Checklist:

• My PR follows the style guidelines of this project
• I have performed a self-review of my own code or materials

[anubhavpulkit]

@AjayThakur12 I think you can't update your remote copy. Start page and Avatar view are modified and if you change the orientation of all images to landscape mode then it looks more beautiful.

[sunjunkie]

@AjayThakur12

• The images are not from the latest repo. You will have to update them.
• As mentioned above, please show the images in landscape mode because that's the way they are viewed in the app.
• 2 images is enough. The readme is not a tutorial of the game. Pick a maximum of 2 screens - maybe the map screen and a mini game screen (not a tutorial screen). Be sure to create captions for the screens.

[AjayThakur12]

@sunjunkie okay I will do recommended changes

[sunjunkie]

@AjayThakur12 Are you planning to update this PR per the recommended changes?

[AjayThakur12]

@sunjunkie sorry for the delay. I will update by today