Merge pull request #5 from microbiomedata/3-enable-edit-on-github-lin…

…k-by-defining-github_url-in-indexrst

Enable "Edit on GitHub" link by defining `:github_url:` in `index.rst`

docs/index.rst

@@ -1,3 +1,11 @@
+:github_url: https://github.com/microbiomedata/metaT_ReadCounts/blob/master/docs/index.rst
+
+..
+   Note: The above `github_url` field is used to force the target of the "Edit on GitHub" link
+         to be the specified URL. That makes it so the link will work, regardless of the Sphinx
+         site the file is incorporated into. You can learn more about the `github_url` field at:
+         https://sphinx-rtd-theme.readthedocs.io/en/stable/configuring.html#confval-github_url
+
 MetaT Read Counts Workflow (v0.0.5)
 =============================