Please make method checking case insensitive

[rcusnir]

There is a difference in method checking.

Following 2 mockify treat as different: "method": "GET" and "method": "get"

Or at least adjust example from main README.md, or add a warning about case sensitivity. It is confusing, it make me to lost one hour.

[brianmoran]

I see what you mean. I will be working on it when I get some spare time.