title: When do I need to include armv7? Can I build for iOS5 devices too using only armv6?
body: <p>I am making a game that I want compatible for all older devices to as long as they all run on iOS4.0 or above. I do have some features specific for iOS5.</p>
  
  <p>Now while making the build should i use both armv6 as well as armv7 architectures or can I just use armv alone? I am using xcode 4.2</p>
  
  <p>Any explanation regarding this would be much appreciated. While I do know how to make it compatible for older devices I need some clarifications on when armv7 is required.</p>
  
  <p>Thanks in advance.</p>