update Acknowledgements

iOSClient/Settings/Acknowledgements.rtf

@@ -1,4 +1,4 @@
-{\rtf1\ansi\ansicpg1252\cocoartf1671\cocoasubrtf100
+{\rtf1\ansi\ansicpg1252\cocoartf1671\cocoasubrtf200
 {\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;}
 {\colortbl;\red255\green255\blue255;}
 {\*\expandedcolortbl;;}
@@ -281,4 +281,22 @@ ____________________________________________\
 Copyright (c) 2010-2011 Matt Rajca, 2011-2015 various authors\
 ____________________________________________\
 \
+
+\f1\b Photo editor
+\f0\b0 \
+\
+The MIT License (MIT)\
+\
+Copyright (c) Written by Mohamed Hamed\
+____________________________________________\
+\
+
+\f1\b SwiftRichString
+\f0\b0 \
+\
+The MIT License (MIT)\
+\
+Copyright (c) Daniele Margutti\
+____________________________________________\
+\
 }