tutorial: add a very basic pointer in the readme
Ideally we should at least build the html from the rst.
--- a/README.md Fri Sep 30 18:21:50 2016 +0200
+++ b/README.md Fri Oct 07 04:10:23 2016 +0200
@@ -18,3 +18,4 @@
See 'hg help -e topic' for a generic help.
See 'hg help topics' and 'hg help stack' for help on specific commands.
+See the 'tests/test-topic-tutorial.t' file for a quick tutorial.