Add C bindings document to index
diff --git a/docs/development/index.rst b/docs/development/index.rst
index 50b6090..f9bc9ee 100644
--- a/docs/development/index.rst
+++ b/docs/development/index.rst
@@ -14,6 +14,7 @@
     submitting-patches
     reviewing-patches
     test-vectors
+    c-bindings
 
 .. _`GitHub`: https://github.com/pyca/cryptography
 .. _`what to put in your bug report`: http://www.contribution-guide.org/#what-to-put-in-your-bug-report