Replacing "container" class with "application"

src/index.html

@@ -1,4 +1,4 @@
-<div class="container">
+<div class="application">
   <form id="regexp-form">
     <textarea id="regexp-input" autofocus="autofocus" placeholder="Enter JavaScript-style regular expression to display"></textarea>
     <button type="submit">Display</button>

src/js/main.js

@@ -4,7 +4,7 @@ import Parser from './parser/javascript.js';
 import _ from 'lodash';
 
 (function() {
-  if (document.body.querySelector('#content .container')) {
+  if (document.body.querySelector('#content .application')) {
     var regexper = new Regexper(document.body);
 
     regexper.bindListeners();

src/sass/main.scss

@@ -123,7 +123,7 @@ header {
 #content {
   padding: rhythm(1);
 
-  .container {
+  .application {
     position: relative;
     @include clearfix;