Simple cipher puzzle.

Starts with Caesar Cipher, extends to substitution ciphers and error correction.
Includes tests, example, readme.
Includes Watchrfile and some instructions.
Still a little concerned that this might be too hard but I'm eager to find out.
Refactor ciphers into multiple days and add a randomness cipher
Move cipher to root directory
Merge pull request #10 from vosechu/cipher

Simple cipher puzzle.