add a spin animation to favorite and boost actions

src/components/retweet_button/retweet_button.js

@@ -1,16 +1,26 @@
 const RetweetButton = {
-  props: [ 'status' ],
+  props: ['status'],
+  data () {
+    return {
+      animated: false
+    }
+  },
   methods: {
     retweet () {
       if (!this.status.repeated) {
         this.$store.dispatch('retweet', {id: this.status.id})
       }
+      this.animated = true
+      setTimeout(() => {
+        this.animated = false
+      }, 500)
     }
   },
   computed: {
     classes () {
       return {
-        'retweeted': this.status.repeated
+        'retweeted': this.status.repeated,
+        'animate-spin': this.animated
       }
     }
   }