Merge pull request #603 from tsloughter/master

add deprecated message
diff --git a/README.md b/README.md
index a7317ba..54e6ad1 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+**rebar is deprecated and will receive only bug fixes. We encourage you to move to [rebar3](https://github.com/erlang/rebar3).**
+
+----
+
 rebar
 =====