clean target added

examples/Makefile

@@ -21,4 +21,7 @@ windows:
 	$(CL) upload.c ../mongoose.c $(CLFLAGS)
 	$(CL) post.c ../mongoose.c $(CLFLAGS)
 	$(CL) post.c ../mongoose.c $(CLFLAGS)
-	$(CL) /DUSE_WEBSOCKET websocket.c ../mongoose.c $(CLFLAGS)
+	$(CL) /DUSE_WEBSOCKET websocket.c ../mongoose.c $(CLFLAGS)
+
+clean:
+	rm -rf hello hello.exe upload upload.exe post post.exe websocket websocket.exe chat chat.exe *.dSYM *.obj