Add doxygen to sphinx
diff --git a/doc/lisp-api.rst b/doc/lisp-api.rst
new file mode 100644
index 0000000..d9c9abf
--- /dev/null
+++ b/doc/lisp-api.rst
@@ -0,0 +1,6 @@
+Lisp C API Docs
+===============
+
+.. doxygenindex::
+	:project: Lisp
+