restore composer.json, add mysqli extension

resources/sass/app.scss

@@ -0,0 +1,9 @@
+// Fonts
+@import url('https://fonts.googleapis.com/css?family=Nunito');
+
+// Variables
+@import 'variables';
+
+// Bootstrap
+@import '~bootstrap/scss/bootstrap';
+//@import './vendor.scss';