from polymerelements to PolymerElements in 2.0-preview (#133)

* Consistent use of CamelCase in bower dependencies

* made the "variants 1.x" section consistent as well

bower.json

@@ -20,33 +20,33 @@
   "homepage": "https://github.com/PolymerElements/iron-dropdown",
   "dependencies": {
     "polymer": "Polymer/polymer#^2.0.0-rc.1",
-    "iron-behaviors": "polymerelements/iron-behaviors#2.0-preview",
+    "iron-behaviors": "PolymerElements/iron-behaviors#2.0-preview",
     "iron-overlay-behavior": "PolymerElements/iron-overlay-behavior#2.0-preview",
     "neon-animation": "PolymerElements/neon-animation#2.0-preview"
   },
   "devDependencies": {
-    "iron-component-page": "polymerelements/iron-component-page#2.0-preview",
+    "iron-component-page": "PolymerElements/iron-component-page#2.0-preview",
     "iron-demo-helpers": "PolymerElements/iron-demo-helpers#2.0-preview",
     "iron-test-helpers": "PolymerElements/iron-test-helpers#2.0-preview",
     "web-animations-js": "web-animations/web-animations-js#^2.2.0",
-    "iron-image": "polymerelements/iron-image#2.0-preview",
+    "iron-image": "PolymerElements/iron-image#2.0-preview",
     "web-component-tester": "Polymer/web-component-tester#^6.0.0-prerelease.6",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^1.0.0-rc.1"
   },
   "variants": {
     "1.x": {
       "dependencies": {
         "polymer": "Polymer/polymer#^1.7.0",
-        "iron-behaviors": "polymerelements/iron-behaviors#^1.0.0",
+        "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0",
         "iron-overlay-behavior": "PolymerElements/iron-overlay-behavior#^1.8.6",
         "neon-animation": "PolymerElements/neon-animation#^1.0.0"
       },
       "devDependencies": {
-        "iron-component-page": "polymerelements/iron-component-page#^1.0.0",
+        "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
         "iron-demo-helpers": "PolymerElements/iron-demo-helpers#^1.0.0",
         "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0",
         "web-animations-js": "web-animations/web-animations-js#^2.2.0",
-        "iron-image": "polymerelements/iron-image#^1.0.0",
+        "iron-image": "PolymerElements/iron-image#^1.0.0",
         "web-component-tester": "^4.0.0",
         "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
       }