docs(readme): fix links and images

[psyray]

I've update the README to change links and images.
I've added Discord invitation, Last conference where I've talked of reNGine
I've removed huntr and sponsoring part

I've generated a banner

[AnonymousWP]

See comments.

[psyray]

See comments.

Comments have been resolved, could you review and merge this if it's good for you

[AnonymousWP]

Most of it looks good, apart from some nitbits that I'll fix myself in the future (mainly Markdown-related). Also, one important thing/question:

Do we keep the badges at the top of the README? And do we also keep the release video of reNgine. reNgine-ng is basically the same as reNgine, but this makes it look like we've been credited/mentioned/featured at some events while that's reNgine. What do you think?

[psyray]

Also, one important thing/question:

Do we keep the badges at the top of the README? And do we also keep the release video of reNgine. reNgine-ng is basically the same as reNgine, but this makes it look like we've been credited/mentioned/featured at some events while that's reNgine. What do you think?

For me it's the reNgine history.
This project has reNgine as a source, so it's legitimate to put Yogesh videos that explain the spirit and usage of the tool.
Same for the badge and I will add ours.
I'm waiting for my french presentation to be published to add another badge 😉