Add excoveralls example
What does this MR do?
Adds one line of in list of coverage examples
Are there points in the code the reviewer needs to double check?
No, it's a simple inclusion
Why was this MR needed?
Because there was no documentation on how to create Elixir projects on gitlab-ci. Even the tools that generates the output had missing documentation, it was pointing to a repository that doesn't exist anymore.
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
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Changelog entry added -
Documentation created/updated -
API support added - Tests
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Added for this feature/bug -
All builds are passing
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Conform by the merge request performance guides -
Conform by the style guides -
Branch has no merge conflicts with master(if it does - rebase it please) -
Squashed related commits together