Fix deprecated warnings

[chu31g]

No description provided.

[chu31g]

It would be nice not to have warnings by integrating this library / pod ;-)

[RafaelKayumov]

Hi @chu31g.

Deployment target of demo project is 6.0. Target platform of the pod is 5.0. I'm currently using sizeWithFont: constrainedToSize:lineBreakMode: which is deprecated since 7.0 - that's right.
You offer to use boundingRectWithSize(_:options:attributes:context:) method instead, but it was declared only in 7.0. It's fine for your project though, but it can break things for others. Rare occasion, but still.

I think respondsToSelector: checks should be applied for both sentences.

[RafaelKayumov]

If it's only about hiding warnings, you could try inhibit_warnings like shown here