Update OpenSource.md

_pages/OpenSource.md

@@ -21,4 +21,5 @@ The UASAL team is an active contributor to projects including:
 - pyKLIP, a python library for PSF subtraction for both exoplanet and disk imaging, [pyKLIP](https://bitbucket.org/pyKLIP/pyklip)
 - poke, a python libary for Polarization Ray Tracing and Gaussian Beamlet Decomposition developed by UASAL supported by a NASA Space Technology Graduate Research Opportunity, [poke](https://github.com/Jashcraf/poke) (pronounced poh-keh).
 - The [Space Hardware Handbook](https://uasal.github.io/spacehardwarehandbook-public/) an open space instrumentation development reference hosted on [github](https://github.com/uasal/spacehardwarehandbook-public)
+- The eXtreme Wavefront Control Toolkit [XWCToolkit](https://github.com/uasal/XWCToolkit) in collaboration with the MagAO-X team