Add a missing file.

casper/createRowIfNotExists.js

@@ -0,0 +1,16 @@
+'use strict';
+module.exports = function(casper) {
+  var logger = require('./logger')(casper);
+  return function(state) {
+    // If we don't know the row, we must create it.
+    if (!state.hasRow) {
+      logger('Trying to insert a new row');
+      casper.evaluate(function() {
+        $('th button').click();
+      });
+    }
+    else {
+      logger('Have row in current screen');
+    }
+  };
+};