It's because of wrong template for ios.
moving /godot_ios_xcode/godot_debug.iphone
/godot_ios_xcode/godot_opt.iphone
to
/godot_ios_xcode/godot_xcode/godot_debug.iphone
/godot_ios_xcode/godot_xcode/godot_opt.iphone
will fix it.
Tested with xcode 7.3.1
- 2.1.2 template / 2.1.2 binary
- 2.1.2 template / 2.2-legacy binary