Docs on how to use to-fix

[arunasank]

• How to create a new task
• How to work on an existing task

Happy to take this on, but I haven't used to-fix yet, and will need a walkthrough.

[ramyaragupathy]

Does this help @arunasank https://github.com/osmlab/to-fix/wiki ?

[ajithranka]

I'll do a documentation refresh and close.