[ci skip] release v1.5.0

Author: dfreedm

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "polymer",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "main": [
     "polymer.html",
     "polymer-mini.html",
@@ -10,7 +10,12 @@
   "ignore": [
     "/.*",
     "/test/",
-    "gen-changelog.sh"
+    "/util/",
+    "/explainer/",
+    "gulpfile.js",
+    "PRIMER.md",
+    "CONTRIBUTING.md",
+    "CHANGELOG.md"
   ],
   "authors": [
     "The Polymer Authors (http://polymer.github.io/AUTHORS.txt)"