Reverse proxy support

fixes #4, #16

public/assets/img/brands/nodejs.svg

@@ -0,0 +1 @@
+<svg aria-labelledby="simpleicons-nodejs-icon" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="simpleicons-nodejs-icon">Node.JS icon</title><path d="M11.435.153l-9.37 5.43c-.35.203-.564.578-.563.983V17.43c0 .404.215.78.564.982l9.37 5.435c.35.203.78.203 1.13 0l9.366-5.433c.35-.205.564-.578.565-.982V6.566c0-.404-.216-.78-.566-.984L12.567.152c-.35-.203-.782-.203-1.13 0"/></svg>

public/assets/js/app.js

@@ -84,6 +84,10 @@
 			expires_media:		'7d',
 			expires_svg:		'7d',
 			expires_fonts:		'7d',
+
+			proxy:				false,
+			proxy_path:			'/',
+			proxy_pass:			'http://127.0.0.1:3000',
 		};
 
 		$scope.location = $location;
@@ -287,6 +291,7 @@
 			$scope.data.php				= $scope.defaultData.php;
 			$scope.data.wordpress		= $scope.defaultData.wordpress;
 			$scope.data.drupal			= $scope.defaultData.drupal;
+			$scope.data.proxy			= $scope.defaultData.proxy;
 			$scope.data.index			= $scope.defaultData.index;
 			$scope.data.fallback_html	= $scope.defaultData.fallback_html;
 
@@ -306,6 +311,10 @@
 				case 'drupal':
 					$scope.data.drupal = true;
 					break;
+				case 'nodejs':
+					$scope.data.php = false;
+					$scope.data.proxy = true;
+					break;
 			}
 
 			gtag('event', preset, {
@@ -438,6 +447,10 @@
 			return $scope.data.limit_req;
 		};
 
+		$scope.isProxy = function() {
+			return $scope.data.proxy;
+		};
+