License missing in the gemspec definition

[mensfeld]

Hey,

My name is Maciej Mensfeld and I run a research security project called WhiteSource https://diffend.io.

I've noticed, that this gem does not have a license definition in the gemspec but it does have an MIT license in the code.

While from the legal perspective it is enough, it can create a confusion for anyone looking at the gem page instead of downloading and unpacking sources (or going to GH):

Just wanted to let you know. Have a nice day :)

[jozefvaclavik]

@mensfeld Done. Thanks for pointing that out! 🍻