initial triplesec implementation
triplesec implemented

Also added method to convert from the old encryption.
change variable name

pep 8 :)
added exception to filecyrpt

also fixed tests.  Forgot to change name of import
filecrypt more robust

Fixed potential error if someone passed in an encrypted
filename to filecyrpt.  Also added triple sec to OSS file.
removed return of instance attribute
fixed filenaming & updated change log
updated tests
added triplesec to setup.py

ready to merge
Merge branch 'dev-triple-sec' into dev