Move the `.htaccess` file into the `app` directory

Moving the file along with changing the `copy` task to also copy the
hidden files will ensure that the `.htaccess` file ends up in the root
of the `dist` directory, and thus, the site.

gulpfile.js

@@ -62,7 +62,7 @@ gulp.task('images', function () {
 
 // Copy All Files At The Root Level (app)
 gulp.task('copy', function () {
-  return gulp.src(['app/*','!app/*.html'])
+  return gulp.src(['app/*','!app/*.html'], {dot: true})
     .pipe(gulp.dest('dist'))
     .pipe($.size({title: 'copy'}));
 });