Add support for removing one or more ciphers from the list of ciphers available
during GSI handshake.
Vulnerabilities corrections

Making static field final to protect them from malicious changes
Merge pull request #72 from bpalak/f34b28e932f8c4f8d04f5bf89ae61078be3525fd

Vulnerabilities corrections
Add LICENSE and updated README per issue #71.
Merge pull request #61 from paulmillar/add-banned-ciphers

Allow the exclusion of certain cipher types when establishing GSI connection