feat(pages): Add 2018 page

Author: bebraw

src/pages/2018.js

@@ -0,0 +1,9 @@
+module.exports = {
+  id: "2018",
+  title: "2018",
+  description: "React Finland 2018",
+  main: `
+React Finland was a great success! Read about [what lessons we learned](https://medium.com/react-finland/react-finland-2018-lessons-learned-754a5f29067c) and [how people experienced the conference](https://medium.com/react-finland/react-finland-2018-blog-coverage-e65bcece8946).
+    
+See also [2018 speakers](/2018/speakers/), [schedule](/2018/schedule/), and [workshops](/2018/workshops/).`,
+};