EasyCrypto 0.5.0

A simple crypto crate aim at usability
Documentation
# 1. What is this?

This is a crate for quickly write some code using crypto.


# 2. Why?

I find current state of rust-crypto is not easy to use, at least for me.


# 3. Current state of development:

- Aes128: done
- Aes192: done
- Aes256: done
- ECB: done
- CBC: done
- OFB: done
- CTR: done


**Pull request and bug report are welcome.**