Post-1.7.0 release nits

[mhvk]

• Authors on pypi is still "the astropy developers", as is the e-mail. Fix in Authors and badges #43.
• A logo would still be nice (Add a logo? #26)
• Should also publish to Zenodo;
• Add zenodo badge; see Add zenodo badge to readme #44
• Might want to have travis badge; fix in Authors and badges #43.
• Also a readthedocs badge? Fix in Authors and badges #43.
• Add link to readthedocs documentation in README.rst (and don't expose it in docs...); fix by adding a badge in Authors and badges #43

[mhvk]

@eteq or @astrofrog - could you enable third-party access so we can have pyerfa on zenodo? (I'm happy to do the actual linking, but it needs the access...)

[astrofrog]

I wasn't sure what was meant by 3rd party access but I've now made all PyERFA maintainers also be admins for the repo instead of just maintainers - @mhvk is that enough?

[mhvk]

Yes, it is! Now set up to automatically be stored on zenodo once another release is made. The changes above may be good enough to warrant an 1.7.0.1...

[mhvk]

Actually, turns out it is triggered by publishing on github, which I hadn't done yet (just had the tag), so just published 1.7.0 to be done with it. And #44 for adding the tag, so people have a DOI to cite.

[mhvk]

closing since this is done except for making a pyerfa badge, which already has its own issue