[Circle CI] set badge text as message when invalid

[RedSparr0w]

Give a general idea of why the badge is not displaying as expected.
only when status not available and message is available otherwise defaults to "invalid"

example invalid response:

{
  "message" : "Permission denied"
}

example badges:

-vs-

[espadrine]

Can we simply check whether 'data.message' is present, and assume it is an error?

[RedSparr0w]

its more for if there is an error and data.message is present then show the user the message so they might be able to work out for themselves how to fix the image url.

In the following cases:

Permission denied:

• the user has supplied a key with insufficient/incorrect privileges.

Project not found:

• the project does not exist on Circle CI (maybe mistyped)
• no key was supplied when it was necessary to do so (private)

There may be more, but i haven't seen any others yet.

If you prefer to keep it the way it is now i understand though as this could also lead to more confusion than just showing a standard message.

edit:
if you supply an invalid branch (but valid project) the response is: [ ] which would return
edit edit: got confused, yeah that would probably work just as well

Updated

[RedSparr0w]

Updated to check if data.message !== undefined

[espadrine]

Thanks! Merged by 3edd0df.