Retroactively sign Allain's commits

[yshyn-iohk]

Proposed feature

@amagyar-iohk, the commit with the following text should be added to the repo:

---

I, Allain Magyar, retroactively sign off on these commits:
commit 9e19074 test: add coveralls integration (#123)

Signed-off-by: Allain Magyar allain.magyar@iohk.io