Add a table of contents

README.adoc

@@ -1,3 +1,5 @@
+:toc: macro
+
 = Otto
 
 **link:https://webchat.freenode.net/?channels=#otto[Chat on IRC]**
@@ -15,6 +17,7 @@ Otto does not aim to be the center of the entire continuous delivery process,
 but rather seeks to interoperate seamlessly with all the various components
 which make CD work for you.
 
+toc::[]
 
 = Status