Add a README with instructions for adding gallery entries

README.md

@@ -0,0 +1,32 @@
+# Instructions for adding a visualization to the QIIME 2 View Gallery
+
+Open a PR against this repo adding the following:
+
+```
+/gallery/
+        |__<entry-name>/
+                       |__info.json
+                       |__thumb.png
+```
+
+## info.json contents
+
+`info.json` must contain the following key: value pairs.
+
+```
+title: The name of your gallery entry
+desc: A short description of your gallery entry
+href: The URL of your visualization (This URL MUST have appropriate CORS headers set)
+```
+
+## thumb.png
+
+The .png you wish to use as the thumbnail for your visualization in the gallery. This should be a screenshot of your visualization.
+
+## /gallery/index.json
+
+Edit `/gallery/index.json` adding `&lt;entry-name&gt;` to the end of the list.
+
+## Example PR
+
+An [example PR](https://github.com/qiime2/q2view-gallery/pull/8) showing the addition of an entry to the gallery in a single atomic commit.