Case-insensitive handling doesn't work for types with multiple capital letters

#21 works for things like `Deployment` or `Pod` that only include one capital letter, but not for types like `StatefulSet` or `DaemonSet` with more than one capital letter.

Here's an example:
```
$ kubespy status apps/v1 statefulset foo
Server is unable to handle apps/v1, Kind=Statefulset
```
```
$ kubespy status apps/v1 StatefulSet foo
Watching status of apps/v1 StatefulSet foo
```
