Use correct test badge and add Twitter (remove unused Gitter)
<tr>
<td>Build Status</td>
<td>
- <a href="https://travis-ci.org/SpikeInterface/spikeinterface">
- <img src="https://travis-ci.org/SpikeInterface/spikeinterface.svg?branch=master" alt="travis build status" />
+ <a href="https://github.com/SpikeInterface/spikeinterface/actions/workflows/full-test.yml/badge.svg">
+ <img src="https://github.com/SpikeInterface/spikeinterface/actions/workflows/full-test.yml/badge.svg" alt="travis build status" />
</a>
</td>
</tr>
<tr>
- <td>Gitter</td>
+ <td>Twitter</td>
<td>
- <a href="https://gitter.im/SpikeInterface/community">
- <img src="https://badges.gitter.im/SpikeInterface.svg" />
- </a>
+ <a href="https://twitter.com/spikeinterface?ref_src=twsrc%5Etfw" class="twitter-follow-button" data-show-count="false">Follow @spikeinterface</a><script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
</td>
</tr>
<tr>
