Make the lib and ffi public for the OpenSSL binding and document them
diff --git a/docs/bindings/index.rst b/docs/bindings/index.rst
new file mode 100644
index 0000000..80f5359
--- /dev/null
+++ b/docs/bindings/index.rst
@@ -0,0 +1,7 @@
+Bindings
+========
+
+.. toctree::
+    :maxdepth: 1
+
+    openssl