Conform ReadMe and Contributing Documents
@tbedford @QuintinWillison Do we have any standardised README structure yet? If no - it looks like it may be a good chance to kick start this.
cc: @AndyNicks
Internal Confluence page which is probably our current starting point for writing a standard (internally, at least - there's an argument for us exposing this into public domain in the near future).
In https://github.com/ably/ably-common/pull/88 we have defined template layouts for README.md and CONTRIBUTING.md, hosted here.
Those documents need conforming in this repository.
This is also a good opportunity to review what's currently here.
Relates to https://github.com/ably/ably-flutter/issues/110.