aharris88/phonegap-sms-plugin — pull request #3 by dieppe (2013-10-17 10:20:01+00:00)
Title: MessageUI framework should be optional, otherwise it won't link

I got the following error using a required MessageUI.framework:
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_MFMessageComposeViewController"

Switching to optional fixed that.