chore(demo): change demo server port to 9090 (ng-bootstrap#303)

Author: icfantv

gulpfile.js

@@ -143,7 +143,7 @@ gulp.task('clean:demo-cache', function() { return del('.publish/'); });
 
 gulp.task(
     'demo-server', ['generate-docs'],
-    shell.task(['webpack-dev-server --config webpack.demo.js --hot --inline --progress']));
+    shell.task(['webpack-dev-server --port 9090 --config webpack.demo.js --hot --inline --progress']));
 
 gulp.task(
     'build:demo', ['clean:demo', 'generate-docs'],

webpack.demo.js

@@ -53,7 +53,7 @@ module.exports = function makeWebpackConfig() {
    */
   config.output = {
     path: root('demo', 'dist'),
-    publicPath: isProd ? '/' : 'http://localhost:8080/',
+    publicPath: isProd ? '/' : 'http://localhost:9090/',
     filename: isProd ? 'js/[name].[hash].js' : 'js/[name].js',
     chunkFilename: isProd ? '[id].[hash].chunk.js' : '[id].chunk.js'
   };