add twitter sharing to game over screen

style/main.css

@@ -174,6 +174,10 @@ hr {
       height: 40px;
       line-height: 42px;
       margin-top: 59px; }
+    .game-container .game-message .score-sharing {
+      display: inline-block;
+      vertical-align: middle;
+      margin-left: 10px; }
     .game-container .game-message.game-won {
       background: rgba(237, 194, 46, 0.5);
       color: #f9f6f2; }

style/main.scss

@@ -192,6 +192,12 @@ hr {
       margin-top: 59px;
     }
 
+    .score-sharing {
+      display: inline-block;
+      vertical-align: middle;
+      margin-left: 10px;
+    }
+
     @include animation(fade-in 800ms ease $transition-speed * 12);
     @include animation-fill-mode(both);