Feature/dependencies

While trying to add kender to mauth-client, it was failing trying to execute cucumber, which is not specified in the mauth-client gemfile, but was required by another gem.  The following change to command.rb will only check for those gems that are specifically declared.  Also I noticed that scenarios.feature was missing ```@redo_bundle```, and its gemfile lacked cucumber, so I added those as well.

```
7 scenarios (7 passed)
32 steps (32 passed)
0m54.414s
```