fix(build): exclude tsconfig.json from the build output

Author: IgorMinar

lib/broccoli/angular2-app.js

@@ -30,7 +30,7 @@ Angular2App.prototype.toTree = function () {
 
     var assetTree = new Funnel(sourceTree, {
         include: ['**/*.*'],
-        exclude: ['**/*.ts', '**/*.js'],
+        exclude: ['**/*.ts', '**/*.js', 'src/tsconfig.json'],
         allowEmpty: true
     });