Razzle added to the alternatives (#2517)

Author: kireerik

README.md

@@ -235,6 +235,7 @@ Some of the more popular and actively maintained ones are:
 
 * [insin/nwb](https://github.com/insin/nwb)
 * [mozilla-neutrino/neutrino-dev](https://github.com/mozilla-neutrino/neutrino-dev)
+* [jaredpalmer/razzle](https://github.com/jaredpalmer/razzle)
 * [NYTimes/kyt](https://github.com/NYTimes/kyt)
 * [zeit/next.js](https://github.com/zeit/next.js)
 * [gatsbyjs/gatsby](https://github.com/gatsbyjs/gatsby)