Check instance of description value

[Goksi]

fixes #57

I went trough endpoints, but it looks only node one seems to return null for description, server endpoint seems to just return empty string if no description is set

[mattmalec]

let me know when it's good to merge

[Goksi]

let me know when it's good to merge

Just gonna check few more endpoints 👍

[Goksi]

That should be it, server endpoint and egg variable both returns empty string and api key description is required

[mattmalec]

great work!