Give smoosh eunit coverage
diff --git a/src/smoosh/rebar.config b/src/smoosh/rebar.config
new file mode 100644
index 0000000..e0d1844
--- /dev/null
+++ b/src/smoosh/rebar.config
@@ -0,0 +1,2 @@
+{cover_enabled, true}.
+{cover_print_enabled, true}.