Add Bottleneck project

Author: qwhelan

_sections/30-projects.md

@@ -76,6 +76,7 @@ These projects pledge to drop Python 2 support in or before 2020.
 - [![](assets/fecon235.png)fecon235](https://github.com/rsvp/fecon235) <!-- url:https://github.com/rsvp/fecon235 sg:503 -->
 - [![](assets/skbio.png)scikit-bio](http://scikit-bio.org) <!-- url:https://github.com/biocore/scikit-bio sg:482 -->
 - [![](assets/metpy.png)MetPy](https://unidata.github.io/MetPy) <!-- url:https://github.com/Unidata/MetPy sg:444 -->
+- [![](assets/bottleneck.png)Bottleneck](https://bottleneck.readthedocs.io/) <!-- url:https://github.com/pydata/bottleneck sg:442 -->
 - [![](assets/sunpy.png)SunPy](https://sunpy.org/) <!-- url:https://github.com/sunpy/sunpy sg:436 -->
 - [![](assets/nengo.png)Nengo](https://www.nengo.ai/) <!-- url:https://github.com/nengo/nengo sg:420 -->
 - [![](assets/axelrod.png)Axelrod](https://github.com/Axelrod-Python/Axelrod) <!-- url:https://github.com/Axelrod-Python/Axelrod sg:398 -->