Version 1.7 crashes with iOS7.

I've updated to version 1.7 and tried to install in iPhone 5s iOS7. It crashed.
Please check.

```
2016-04-27 22:57:17.372 ...[11126:60b] +[UIImage imageNamed:inBundle:compatibleWithTraitCollection:]: unrecognized selector sent to class 0x195e843b0
```
