include rev id in README

mdavidsaver · mdavidsaver · commit edceda7bf90f · 2016-01-28T17:54:54.000-05:00
diff --git a/.gitattributes b/.gitattributes
@@ -0,0 +1 @@
+README.md export-subst
diff --git a/README.md b/README.md
@@ -17,4 +17,6 @@ VCS sources
 git clone https://github.com/epics-modules/devlib2.git
 ```
 
+This is file is generated from git revision $Format:%H$
+
 <a href="https://travis-ci.org/epics-modules/devlib2"><img src="https://travis-ci.org/epics-modules/devlib2.svg">CI Build Status</img></a>
