Add "feedback" component; vuex store config

seems i have a lot to learn...pretty sure this isn't very clean yet

src/components/index.js

@@ -1,5 +1,7 @@
 import ByjoveLogo from './logo'
+import ByjoveFeedback from './feedback'
 
 export {
     ByjoveLogo,
+    ByjoveFeedback,
 }