Documentation/Readme update

[Chirag018]

Update the Readme file to make it easy for the other developers to walk in easily.

cc: @escottalexander @ZakGriffith @emudoteth

[gotnoshoeson]

@Chirag018 Can you provide a list of sections you'd like to see updated?

[escottalexander]

@Chirag018 I feel like the quickstart segment of the readme outlines what steps are necessary. https://github.com/scaffold-eth/OP-RetroPGF3-Discovery-Voting#quickstart

Since you set it up more recently maybe you would have some good ideas about how to clarify the steps. Feel free to DM me with any thoughts and we can figure out how to make it super clear for the next dev.

[gotnoshoeson]

I just started to contribute last night. Seemed like the only missing bit for me was asking for the DB credentials. But it was covered in the telegram chat.

[Chirag018]

Hey, @gotnoshoeson you can work on other open issues at the moment, as I kept this task for the end when we were about to showcase it.

[gotnoshoeson]

okay