Update the readme.md and instruction box

[SoumyadevSaha]

Prerequisites

• I am an Open Source Contributor
• I checked to make sure that this issue has not already been filed

Description

Proposed Changes:

1. Update the in-game instruction box to notify/warn the players to avoid the rotten edibles along with the bomb.
2. Update the introduction section in the readme.md as well for the same.
3. Update the screen-shot of the instruction box in the game as well as add a screen-shot about how the rotten edibles might look like during game-play time.

Screenshots

The Instruction box

The rotten edibles screen-shot

Readme.md's introduction section

Code of Conduct

• I follow Contributing Guidelines of this project.