Merge pull request #39 from kpdecker/literal-example

Add additional example of literal use case

src/pages/expressions.haml

@@ -40,7 +40,7 @@
       To reference a property that is not a valid identifier, you can
       use segment-literal notation:
     :html
-      {{#each articles.[10].comments}}
+      {{#each articles.[10].[#comments]}}
         <h1>{{subject}}</h1>
         <div>
           {{body}}