Add 'uninstall' target, too.
diff --git a/Makefile b/Makefile
index 7eb22fb..a9f1735 100644
--- a/Makefile
+++ b/Makefile
@@ -17,3 +17,5 @@
 		git-flow-version \
 		$(GIT_EXEC_PATH)
 
+uninstall:
+	test -d $(GIT_EXEC_PATH) && rm -f $(GIT_EXEC_PATH)/git-flow*