Use tar instead of zip

Keep file execution bit.

makefile

@@ -27,4 +27,4 @@ exec: $(EXEC)
 
 dist: $(EXEC)
 	@mkdir -p dist
-	zip dist/RainbowDodge.zip ./bin/$(EXEC)
+	tar --create --file dist/RainbowDodge-linux.tar ./bin/$(EXEC)