Typo

README.md

@@ -106,7 +106,7 @@ In your show view:
     <%= image_tag @user.avatar.url(:medium) %>
     <%= image_tag @user.avatar.url(:medium) %>
     <%= image_tag @user.avatar.url(:thumb) %>
     <%= image_tag @user.avatar.url(:thumb) %>
 
 
-To detach a file, simple set the attribute to `nil`:
+To detach a file, simply set the attribute to `nil`:
 
 
     @user.avatar = nil
     @user.avatar = nil
     @user.save
     @user.save