Minor chat example fixes

Author: grrowl

examples/chat/components/MessageList.js

@@ -13,7 +13,7 @@ const styles = {
   content: {
     display: 'flex',
     flexDirection: 'column',
-    justifyContent: 'flex-end',
+    justifyContent: 'center',
   },
   source: {
     // Hack, but stops flexbox from stretching

examples/chat/package.json

@@ -16,7 +16,7 @@
   "homepage": "https://github.com/grrowl/redux-scuttlebutt",
   "dependencies": {
     "babel-preset-stage-0": "^6.5.0",
-    "primus": "^5.2.2",
+    "primus": "^6.0.0",
     "react": "^0.14.7",
     "react-dom": "^0.14.7",
     "react-redux": "^4.2.1",