add initWebComponents

CHANGELOG.md

+#### 0.11.1
+  * Added `initWebComponents` function which performs html import aware
+    initialization of an application. This is done by crawling all imported
+    documents for dart script tags and initializing them. Any applications using
+    this package should switch to this method instead of calling `run` from the
+    `initialize` package directly.
+  * You may also now just export `package:web_components/init.dart` to
+    initialize your app, and then stick your startup code inside a method marked
+    with `@initMethod`, for instance:
+
+        library my_app;
+        export 'package:web_components/init.dart';
+
+        @initMethod
+        void startup() {
+          // custom app code here.
+        }
+
 #### 0.11.0
   * Add `bindingStartDelimiters` option to the `ImportInlinerTransformer`. Any
     urls which contain any of the supplied delimiters before the first `/` will
     be left alone since they can't be reasoned about. If you want these urls to
     be treated as relative to the current path you should add a `./` in front.
   * The `ScriptCompactorTransformer` now names its bootstrap file based on the
     entry point html file, instead of the original dart file. This is ensure it
     is the original package.
 
 #### 0.10.5+3
@@ skipping 159 matching lines @@
   * Reverts back to what we had in 0.3.4. (The platform.js updates in 0.3.5 had
     breaking changes so we are republishing it in 0.4.0)
 
 #### 0.3.5
   * Added `registerDartType` to register a Dart API for a custom-element written
     in Javascript.
   * Updated to platform 0.3.3-29065bc
 
 #### 0.3.4
   * Updated to platform 0.2.4 (see lib/build.log for details)