Update readme

README.md

@@ -104,3 +104,17 @@ Full command-line arguments are available with `brainreg -h`, but please
 [get in touch](mailto:adam.tyson@ucl.ac.uk?subject=brainreg) if you have any questions.
 
 
+### Visualisation
+
+brainreg comes with a plugin ([napari-brainreg](https://github.com/brainglobe/napari-brainreg)) for [napari](https://github.com/napari/napari)
+
+To visualise your data, open napari and drag your brainreg output directory (the one with the log file) onto the napari window.
+
+Various images should then open, including:
+* `Image (downsampled)` - the image used for registration
+* `Annotations` - the atlas labels, warped to your sample brain
+* `Boundaries` - the boundaries of the atlas regions
+
+If you downsampled additional channels, these will also be loaded.
+
+![process](https://raw.githubusercontent.com/brainglobe/napari-brainreg/master/resources/napari-brainreg.png)