Adding other Enigma documentation.

A '.tiff' from the US Patent for the commercial version of the Enigma
machine, circa January 24, 1928.
A '.docx' file containing all the relevant information about the Enigma
machine that I have been able to find so far.
Revert "Adding other Enigma documentation."

This reverts commit 78e88c17e506e4e0366c946f8282ad5fe8a01704.