Update bower.json

bower.json

@@ -2,9 +2,7 @@
   "name": "polymer",
   "version": "2.0.0-preview",
   "main": [
-    "polymer.html",
-    "polymer-mini.html",
-    "polymer-micro.html"
+    "polymer.html"
   ],
   "license": "http://polymer.github.io/LICENSE.txt",
   "ignore": [
@@ -23,10 +21,10 @@
     "url": "https://github.com/Polymer/polymer.git"
   },
   "dependencies": {
-    "webcomponentsjs": "#gulp-all-the-things"
+    "webcomponentsjs": "#v1"
   },
   "devDependencies": {
-    "web-component-tester": "*",
+    "web-component-tester": "^5",
     "test-fixture": "PolymerElements/test-fixture#safari9-constructor"
   },
   "private": true,