Add active line highlight.

views/index.hbs

@@ -10,6 +10,7 @@
 <link rel="stylesheet" href="lib/codemirror.css">
 <link rel="stylesheet" href="addon/dialog/dialog.css">
 <script src="lib/codemirror.js"></script>
+<script src="addon/selection/active-line.js"></script>
 <script src="addon/dialog/dialog.js"></script>
 <script src="addon/search/searchcursor.js"></script>
 <script src="mode/markdown/markdown.js"></script>
@@ -19,6 +20,8 @@
     .CodeMirror {
         border: 1px solid #eee;
         height: auto;
+        border-top: 1px solid black;
+        border-bottom: 1px solid black;
     }
 </style>
 </head>
@@ -37,7 +40,8 @@
         matchBrackets: true,
         showCursorWhenSelecting: true,
         viewportMargin: Infinity,
-        tabSize: 4
+        tabSize: 4,
+        styleActiveLine: true
     });
     // Add my .vimrc stuff.
     CodeMirror.Vim.map('jj', '<Esc>', 'insert')