Add More Greetings

[runewake2]

There are a number of greetings in the Constants file. Lets add a few more to introduce some extra variety to the game.

[hassana123]

Would like to help

[runewake2]

Hi @hassana123! Contributions are welcome - the more the merrier 😁

There is a sample of what a change like this would look like in #26.

[hassana123]

done #27

[computerscienceiscool]

Adding a greeting to make the game a bit more usable.