Readme: Update New Features section

README.md

@@ -52,6 +52,9 @@ The main new features compared to upstream swaylock are:
 	  to a mouse event, and `--grace-no-touch` to not unlock as a response to
 	  a touch event.
 * `--fade-in <seconds>` to make the lock screen fade in.
+* `--indicator-image` to display an image inside the indicator.
+* `--text-clear`, `--text-caps-lock`, `--text-ver`, `--text-wrong` to change the
+  texts displayed inside the indicator.
 * Various effects which can be applied to the background image
 	* `--effect-blur <radius>x<times>`: Blur the image (thanks to yvbbrjdr's
 	  fast box blur algorithm in