fix(MdDialog): IE not rendering Dialogs (#1356)

Author: Samuell1

src/components/MdDialog/MdDialog.vue

@@ -102,6 +102,7 @@
     margin: auto;
     display: flex;
     flex-flow: column;
+    flex-direction: row;
     overflow: hidden;
     position: fixed;
     top: 50%;