Improve BACKEND readme file

[petya-kangalova]

Review existing readme file and suggest improvement to the documentation https://github.com/hotosm/fAIr/blob/master/backend/README.md

Plan is to first improve in current location and then decide if to move to Wiki and agree structure. @chrischank to work on this! Thank youuuu

[chrischank]

Unfortunately my laptop had been broken down one day after we met. I'll only receive my new laptop on Monday. Hope this issue is not in too much of a rush

[petya-kangalova]

hi @chrischank no worries at all and we are not in a rush. Hope you receive the laptop today and all gets sorted.

[petya-kangalova]

@chrischank how is the work going on the backed docs? Can you link to any PRs if ready? Keep us posted. We had some other volunteers message to see if they can input into documentation so wanted to check where you have gone to.

[chrischank]

HI @petya-kangalova so I have been struggling to recreate and rebuild the docker images with MacOS and Arch Linux, so I can only write, what I can do and know given limited experiment. I felt like the readme therefore is incomplete. In addition, I am waiting for the infographics review whether I am missing something or not. Here is my forked repo backend_readme.md so far. Will make a pull requests once the diagram is reviewed

https://github.com/chrischank/fAIr/blob/backend_doc/backend/backend_README.md

[petya-kangalova]

Hi @chrischank thank you for the update and appreciate the work you have done. @omranlm @kshitijrajsharma can you assist with the diagram review?