banner(angularconnect): add an ac promo to the banner

harp.json

@@ -506,7 +506,7 @@
         "website": "http://crisbeto.com/",
         "bio": "Kristiyan is a front-end developer, passionate open-source contributor and a core team member on Angular Material.",
         "type": "Community"
-      },
+      }
     }
   }
 }

package.json

@@ -31,16 +31,18 @@
     "browser-sync": "^2.9.3",
     "canonical-path": "0.0.2",
     "cheerio": "^0.20.0",
-    "cross-spawn": "^4.0.0",
     "codelyzer": "0.0.22",
+    "cross-spawn": "^4.0.0",
     "del": "^2.2.0",
     "dgeni": "^0.4.0",
     "dgeni-packages": "^0.13.1",
     "diff": "^2.1.3",
     "fs-extra": "^0.30.0",
     "globby": "^4.0.0",
+    "grunt-sass": "^1.2.0",
     "gulp": "^3.5.6",
     "gulp-env": "0.4.0",
+    "gulp-sass": "^2.3.2",
     "gulp-task-listing": "^1.0.1",
     "gulp-tslint": "^5.0.0",
     "gulp-util": "^3.0.6",

public/_includes/_hero-home.jade

@@ -8,6 +8,6 @@ header(class="background-sky")
   .banner.banner-floaty
     .banner-ng-annoucement
       div(class="banner-text" align="center")
-        p Angular Content in Chinese<br/>Angular 中文资源
+        p Join us for AngularConnect in London, UK this September!
       div(class="banner-button")
-        a(href="https://angular.cn" target="_blank" class="button md-button") Visit angular.cn
+        a(href="http://angularconnect.com/?utm_source=angular&utm_medium=banner&utm_campaign=angular-banner" target="_blank" class="button md-button") Register now