Modify system_run result to allow methods for querying

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #9 from kbarber/ostruct_style_results

Modify system_run result to allow methods for querying
Release 1.2.0

Signed-off-by: Ken Barber <ken@bob.sh>
Improve shellquoting for vagrant

This should improve the library to handling quoting a little better
in vagrant.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #10 from kbarber/shellquote

Improve shellquoting for vagrant
Release 1.2.1

Signed-off-by: Ken Barber <ken@bob.sh>
Merge branch 'master', remote-tracking branch 'upstream' into override_destroy