fix(main.js): color of 404 status in console logs (#46)

diff --git a/src/main.js b/src/main.js
index e651f12..20449ce 100644
--- a/src/main.js
+++ b/src/main.js
@@ -31,7 +31,7 @@
     // Attach this before anything else to provide status output
     this.app.use((req, res, next) => {
         res.on('finish', function () {
-            const color = this.statusCode === '404' ? chalk.red : chalk.green;
+            const color = this.statusCode === 404 ? chalk.red : chalk.green;
             let msg = `${color(this.statusCode)} ${this.req.originalUrl}`;
             const encoding = this.getHeader('content-encoding');
             if (encoding) {