Grunt should watch for changes in lib/infobox/*.js, too.

tasks/development.js

@@ -13,7 +13,7 @@ module.exports = function (grunt) {
         options: {
           livereload: true
         },
-        files: ["*.css", "app.js", "lib/*.js", "*.html"],
+        files: ["*.css", "app.js", "lib/**/*.js", "*.html"],
         tasks: ["default"]
       },
       config: {