add validated props

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-file-upload-component",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "A simple file upload component for Vue.js. Emits events for XHR Upload Progress for nice progress bars.",
   "homepage": "http://ohdoylerules.com",
   "repository": "https://github.com/james2doyle/vue-file-upload-component",

vue.file-upload.js

@@ -2,7 +2,20 @@
 // define
 var FileUploadComponent = Vue.extend({
   template: '<div class="{{ class }}"><input type="file" name="{{ name }}" id="{{ name }}" accept="{{ accept }}" v-on:click="fileInputClick" v-on:change="fileInputChange" multiple="{{ multiple }}"><button type="button" v-on:click="fileUpload">Upload</button></div>',
-  props: ['class', 'name', 'action', 'accept', 'multiple'],
+  props: {
+    class: String,
+    // a required string
+    name: {
+      type: String,
+      required: true
+    },
+    action: {
+      type: String,
+      required: true
+    },
+    accept: String,
+    multiple: String
+  },
   data: function() {
     return {
       myFiles: [] // a container for the files in our field