Fix `make run` command. Fixes #77

Makefile

@@ -9,7 +9,7 @@ compile: $(REBAR)
 	$(REBAR) as dev compile
 
 run: $(REBAR)
-	@$(REBAR) as dev shell --apps pooler --config config/demo.config
+	@$(REBAR) as test shell --apps pooler --config config/demo.config
 
 test: $(REBAR)
 	$(REBAR) eunit --verbose --cover