Update the main README with info and link upgrade & migration docs

[prateekpandey14]

Description

Update the main README with info and link upgrade & migration docs in https://github.com/openebs/upgrade repo.

Create links for the required Upgrade and Migrations docs from the docs folder from the Upgrade repo

Possible Solution

Refer https://github.com/openebs/openebs/blob/master/k8s/upgrades/README.md for some ideas

[Naveenkhasyap]

Hi @prateekpandey14 , interested to take this up,
one query do we need to have all the info from upgrade & migration docs or can we give overview for them and give hyperlink which points to these docs readme.

[prateekpandey14]

thanks @Naveenkhasyap , we can given overview and give hyperlink

[ShubhamSood1406]

@prateekpandey14 Can I also contribute to it?

[Naveenkhasyap]

thanks @Naveenkhasyap , we can given overview and give hyperlink

working on it.

[shubham14bajpai]

@ShubhamSood1406 if you are still interested you can take up this issue #3158

[ShubhamSood1406]

@ShubhamSood1406 if you are still interested you can take up this issue #3158

Yes I can do that, can you assign me that.

[shubham14bajpai]

@ShubhamSood1406 if you are still interested you can take up this issue #3158

Yes I can do that, can you assign me that.

@ShubhamSood1406 Another contributor has already raised a PR. I will try to find some other issue for you.

[ShubhamSood1406]

@ShubhamSood1406 if you are still interested you can take up this issue #3158

Yes I can do that, can you assign me that.

@ShubhamSood1406 Another contributor has already raised a PR. I will try to find some other issue for you.

Yes please consider me if you find some other issue.

[jayeshmann]

this is still open?

[shubham14bajpai]

this is still open?

The PR is already raised by another contributor.

[shubham14bajpai]

This issue was addressed by the PR openebs-archive/upgrade#57