Unable to list deployments

* Python version: 3.6.2
* Operating System: OsX

### Description

Trying to list deployments using the cli client results in an exception.

### What I Did

```
(cloudlaunch-cli)Nuwan@Nuwans-MBP-2 cloudlaunch_cli (master)$ cloudlaunch deployments list
Traceback (most recent call last):
File "/Users/Nuwan/work/cloudlaunch-cli/venv/bin/cloudlaunch", line 11, in
load_entry_point('cloudlaunch-cli', 'console_scripts', 'cloudlaunch')()
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 722, in __call__
return self.main(*args, **kwargs)
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/Users/Nuwan/work/cloudlaunch-cli/venv/lib/python3.6/site-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/Users/Nuwan/work/cloudlaunch-cli/cloudlaunch_cli/main.py", line 80, in list_deployments
deployments = cloudlaunch_client.deployments.list(archived=archived)
File "/Users/Nuwan/work/cloudlaunch-cli/cloudlaunch_cli/api/endpoints.py", line 100, in list
return [self._create_response(item) for item in items['results']]
TypeError: string indices must be integer
```