Updated info. [ci skip]
Ignored README.md during merges [ci skip]
Revert "Ignored README.md during merges [ci skip]"

This reverts commit 10abc424704efd877831ebf7af97726145b3dddf.
Added .gitattributes. Ignore README
Added SymbolsError

Removed unused colorama import.
Added SymbolsError to caeser()
Updated raised TypeError message
Update .gitignore
Add Travis CI status. [ci skip]
Normalize line endings. [ci skip]
Used full exception names. Fix #3.
Added WeakKeyError.
Added *.orig
Added Transposition cipher.
Convert Line endings to LF.