add net/ssh/krb.rb to play nice with bundler autoloading
force encoding with Encoding::ASCII_8BIT when process GSSAPI handshake
update README.md

  add demo
Bump GSSAPI to 1.2.0

This helps with some segmentation fault issues within the GSSAPI
Merge pull request #3 from davidcollom/master

Bump GSSAPI to 1.2.0
Remove Gemfile.lock
Update rspec
Bump to 0.4.0
merge from cbeer/master