Add check target to Makefile

Makefile

@@ -2,4 +2,12 @@ all:
 	./bootstrap
 
 clean:
-	@rm -rf rebar ebin/*.beam inttest/rt.work
+	@rm -rf rebar ebin/*.beam inttest/rt.work
+
+debug:
+	./bootstrap debug
+
+check: debug
+	-@./rebar xref
+	-@dialyzer ebin --verbose -Wunmatched_returns -Werror_handling \
+		-Wrace_conditions -Wunderspecs