Added logos to thirdparty libraries

[Nyholm]

Related to #123

[dbu]

👍

i think having external images for those is fine. can you check if you get sphinx to not complain about that? i found http://stackoverflow.com/questions/12772927/specifying-an-online-image-in-sphinx-restructuredtext-format - maybe suppress_warnings = ['image.nonlocal_uri'] is enough?

[Nyholm]

Thank you for the review.

Hm, suppress_warnings = ['image.nonlocal_uri'] in conf.py did not work. I'll check this out later.. I have a meeting now.

[Nyholm]

You were correct. I was running and old version of sphinx.

[Nyholm]

I've also updated the path to the Swap logo. I added it here: php-http/httplug.github.io#6

I think we should limit the number of logos here to six and then add more at httplug.io.

[dbu]

thanks tobias!

agreed to limit to 6. if there are more, lets try to show the most known projects here.

[Nyholm]

Awesome.

Thank you for merging.