Readme 1522

https://github.com/FreshRSS/FreshRSS/issues/1236#issuecomment-299627105

CHANGELOG.md

@@ -20,6 +20,8 @@
 	* Fix UI lowest subscription popup hidden [#1479](https://github.com/FreshRSS/FreshRSS/issues/1479)
 	* Fix update system via ZIP archive [#1498](https://github.com/FreshRSS/FreshRSS/pull/1498)
 	* Work around for IE / Edge bug in username pattern in version 1.6.3 [#1511](https://github.com/FreshRSS/FreshRSS/issues/1511)
+* UI
+	* Download icon 💾 for other MIME types (e.g. `application/*`) [#1522](https://github.com/FreshRSS/FreshRSS/pull/1522)
 * I18n
 	* Improve English [#1465](https://github.com/FreshRSS/FreshRSS/pull/1465)
 * Misc.