Mention file upload support in readme

Author: Antti Kuosmanen

readme.md

@@ -12,6 +12,7 @@ Features:
 - **It's pluggable.** Add your own validation or automation with filters and action hooks.
 - Option to send a copy of submitted forms via email
 - Preview your forms
+- Full file upload support with input type=file
 
 ## Screenshots
 

readme.txt

@@ -23,6 +23,7 @@ Use standard HTML5 markup to create fully functional forms for WordPress
 * Submit and validate forms via AJAX
 * Validates required fields automatically using the native HTML5 required attribute
 * Option to send a copy of submitted forms via email
+* Full file upload support with input type=file
 
 **Contributing**