update assets

assets/fontawesomefree/assetTemplates/json/custom-icons.webfont.json.hbs

@@ -0,0 +1,8 @@
+{
+  "familyName": "Font Awesome Kit",
+  "style": "Regular",
+  "fontWeight": 400,
+  "copyright": "Copyrights may held by the various creators of the icons in this font",
+  "url": "https://fontawesome.com",
+  "description": "custom icons from Kit token {{token}}"
+}