updated todo for mac

Author: HHMagnus

FEATURES.md

@@ -4,6 +4,7 @@ Features:
 - As a User I want to be able to control any parameters that effect the quality of the output
 
 TODO:
+- Make sure input and output images are correct
 - Setup a index.html to upload image and convert it
 - Make it possible to choose output format with the supported type
 - Put in an error section
@@ -12,3 +13,4 @@ TODO:
 - Custom domain
 - Fill in keywords section
 - correctly select media type when downloading
+- Check documentation for more advanced look at lossy compression