Add image/screenshot

README.md

@@ -2,6 +2,8 @@
 
 Simple and beautiful forum software - created using Express, Vue, and Sequelize.
 
+![forum-screenshot](https://user-images.githubusercontent.com/5166028/30886924-15a8bff8-a311-11e7-9833-981d60e0cd41.png)
+
 To install on Heroku:
 
  1. `git clone https://github.com/sbkwgh/forum.git`
@@ -18,4 +20,4 @@ To install on Heroku:
  12. `git push heroku master`
  13. Visit the URL of the app and complete the on-screen instructions
 
-N.B. the database here is assumed to be MySQL - to use Postgres or another you must install the corresponding driver on npm
+N.B. the database here is assumed to be MySQL - to use Postgres or another you must install the corresponding driver on npm