Force goldrush to version 0.1.6

rebar.config

@@ -1,7 +1,7 @@
 {erl_opts, [debug_info]}.
 {erl_first_files, ["src/lager_util.erl"]}.
 {deps, [
-        {goldrush, ".*",
+        {goldrush, "0\.1\.6",
             {git, "git://github.com/DeadZen/goldrush.git", {tag, "0.1.6"}}}
        ]}.