Update to iOS Deployment Targets

The iOS Deployment Targets currently end at iOS 5.1.

Simple update to jucer_ProjectExport_XCode.h,  line 208:

const char* iosVersions[] = { "Use Default", "3.2", "4.0", "4.1", "4.2", "4.3", "5.0", "5.1", "6.0", "6.1", "7.0", "7.1", 0 };
const char* iosVersionValues[] = { osxVersionDefault, "3.2", "4.0", "4.1", "4.2", "4.3", "5.0", "5.1", "6.0", "6.1", "7.0", "7.1", 0 };

Yes, thanks! Will update..