Add polymer 1.0 to npm_modules

polymer_1.0.4/bower_components/platinum-sw/README.md

+# Platinum Service Worker Elements
+A set of Polymer elements that simplify service worker registration and caching, powered by the
+[`sw-toolbox` library](https://github.com/googlechrome/sw-toolbox).
+Full documentation is available at https://PolymerElements.github.io/platinum-sw/index.html
+
+# Considerations
+
+## Top-level `sw-import.js`
+While `<platinum-sw-register>` abstracts away many of the details of working with service workers,
+there is one specific requirement that developers must fulfill: it needs to register a JavaScript file
+located at the top-level of your site's web root. (Details behind this requirement can be found in
+the service worker specification [issue tracker](https://github.com/slightlyoff/ServiceWorker/issues/468#issuecomment-60276779).)
+
+In order to use `<platinum-sw-register>`, it's recommended that you create a `sw-import.js` file in
+your site's web root. The file's only contents should be
+
+    importScripts('bower_components/platinum-sw/service-worker.js');
+
+You can adjust the path to `service-worker.js` if your project has its Polymer elements
+installed somewhere other than `bower_components/`.
+
+If you have multiple subdirectories worth of pages on your site, it's recommend that you include the
+`<platinum-sw-register>` element on a top-level entry page that all visitors will access first; once
+they visit the top-level page and the service worker is registered, it will automatically apply to
+all sub-pages, which will fall under its
+[scope](https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#service-worker-registration-scope).
+
+## `cacheOnly` & `cacheFirst` `defaultCacheStrategy` Considered Harmful
+The [`sw-toolbox` library](https://github.com/googlechrome/sw-toolbox),
+which `<platinum-sw-cache>` is built on, supports a number of
+[caching strategies](https://github.com/googlechrome/sw-toolbox#built-in-handlers).
+Two of them, `cacheOnly` and `cacheFirst`, are strongly discouraged to be used as the `defaultCacheStrategy`
+for `<platinum-sw-cache>`. With both of those strategies, all HTTP requests, including requests for
+the page which contains the `<platinum-sw-cache>` element, are served directly from the [Cache Storage
+API](https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#cache-objects) without
+first consulting the network for a fresh copy. Once the copy of the host page is cached,
+it's extremely difficult to change the configuration of the service worker (since the configuration
+depends on the page's contents), and developers could find themselves deploying sites that can never
+update.
+
+In a future release of `<platinum-sw-cache>`, using `cacheOnly` and `cacheFirst` as `defaultCacheStrategy`
+may lead to an explicit error condition, but for the meantime, please consider a more reasonable default
+(like `networkFirst`).