fix(compiler): properly bind to properties that don't have matching attr name

Fixes #619
Closes #783

modules/angular2/src/facade/dom.dart

@@ -17,7 +17,8 @@ export 'dart:html' show
   InputElement,
   AnchorElement,
   Text,
-  window;
+  window,
+  attrToPropMap;
 
 // TODO(tbosch): Is there a builtin one? Why is Dart
 // removing unknown elements by default?
@@ -36,6 +37,11 @@ void gc() {
 
 final identitySanitizer = new IdentitySanitizer();
 
+// override JS logic of attribute to property mapping
+var attrToPropMap = {
+  "inner-html": "innerHtml"
+};
+
 class DOM {
   static query(String selector) => document.querySelector(selector);
 

modules/angular2/src/facade/dom.es6

@@ -16,6 +16,8 @@ export var gc = window.gc ? () => window.gc() : () => null;
 export var CssRule = window.CSSRule;
 export var CssKeyframesRule = window.CSSKeyframesRule;
 
+export var attrToPropMap = {};
+
 export class DOM {
   static query(selector) {
     return document.querySelector(selector);