Automatically fixes file permissions

src/Makefile

@@ -32,6 +32,8 @@ build:
 	mv README.md-nobuild ../README.md
 	cd assets && mv font-awesome font-awesome-{{ site.fontawesome.version }} && zip -r9 font-awesome-{{ site.fontawesome.version }}.zip font-awesome-{{ site.fontawesome.version }} && mv font-awesome-{{ site.fontawesome.version }} font-awesome
 
+	find .. -type f ! -perm 644 -exec chmod 644 {} \;
+
 default: build