Add a data-html binding in addition to data-text. Fix typos and inconsistencies.

@@ -15,6 +15,7 @@ No contrived example here yet, but the `rivets` module is simple. It exposes a s
 #### Available bindings:
 
 - **data-text**: one-way binding that sets the node's text.
+- **data-html**: one-way binding that sets the node's html content.
 - **data-value**: two-way binding that sets the node's value.
 - **data-show**: one-way binding that sets the node's display state.
 - **data-hide**: one-way inverse binding that sets the node's display state.

@@ -63,9 +63,12 @@
       return setAttribute(el, 'selected', value, true);
     },
     unselected: function(el, value) {
-      return setAttribute(el, 'checked', !value, true);
+      return setAttribute(el, 'selected', !value, true);
     },
     text: function(el, value) {
+      return el.innerText = value || '';
+    },
+    html: function(el, value) {
       return el.innerHTML = value || '';
     },
     value: function(el, value) {

@@ -41,8 +41,10 @@ bindings =
   selected: (el, value) ->
     setAttribute el, 'selected', value, true
   unselected: (el, value) ->
-    setAttribute el, 'checked', !value, true
+    setAttribute el, 'selected', !value, true
   text: (el, value) ->
+    el.innerText = value or ''
+  html: (el, value) ->
     el.innerHTML = value or ''
   value: (el, value) ->
     el.value = value