update: update stylus and stylus-loader, fix import in demo component

Author: rychkog

demo/app.ts

@@ -1,6 +1,6 @@
 import {bootstrap} from '@angular/platform-browser-dynamic';
 import {Component} from '@angular/core';
-import {BranchyComponent} from 'ng2-branchy.ts';
+import {BranchyComponent} from '../ng2-branchy';
 
 @Component({
   selector: 'app',

package.json

@@ -35,7 +35,8 @@
     "html-webpack-plugin": "2.9.0",
     "raw-loader": "0.5.1",
     "style-loader": "0.13.1",
-    "stylus-loader": "1.5.1",
+    "stylus": "0.54.5",
+    "stylus-loader": "2.1.0",
     "to-string-loader": "1.1.4",
     "typings": "0.7.9",
     "webpack-dev-server": "1.14.1"