Caterpillar now generates app.info.js, a metadata script. Resolves #12.

src/js/polyfills/runtime.polyfill.js

Index: src/js/polyfills/runtime.polyfill.js
diff --git a/src/js/polyfills/runtime.polyfill.js b/src/js/polyfills/runtime.polyfill.js
index 4d528795c5e31ace78ec1aca418cb7b04bbfac04..7833480fef0398381f29bc4a50fd9eee69632227 100644
--- a/src/js/polyfills/runtime.polyfill.js
+++ b/src/js/polyfills/runtime.polyfill.js
@@ -102,7 +102,6 @@ chrome.runtime.lastError = null;
 /**
  * The ID of the app, or null if not applicable.
  */
-// TODO(alger): Consider getting this from the Chrome App manifest.
 chrome.runtime.id = null;
 
 /**
@@ -260,4 +259,4 @@ chrome.runtime.getPackageDirectoryEntry = function() {
 // TODO(alger): Implement or stub onMessageExternal.
 // TODO(alger): Implement or stub onRestartRequired.
 
-}).call(this);
+}).call(this);