Doesn't seem to play nice with bundler in some cases

[wfarr]

1.9.3-p0$ bundle show | grep knife 
  * knife-ec2 (0.5.10)
  * knife-github-cookbooks (0.1.5)
1.9.3-p0$ bundle install --binstubs --quiet
1.9.3-p0$ bin/knife github cookbook install librato/papertrail-cookbook
zsh: correct 'cookbook' to 'cookbooks' [nyae]? n
FATAL: Cannot find sub command for: 'github cookbook install librato/papertrail-cookbook'
Available subcommands: (for details, knife SUB-COMMAND --help)
...

Not quite sure where the breakage is, but something about this bundled environment is preventing it from loading properly.