Replace coveralls with simplecov
Since we have own coverage badge now there is no need to keep more dependencies than we actually need.
Signed-off-by: Dmitriy Zaporozhets dmitriy.zaporozhets@gmail.com
Since we have own coverage badge now there is no need to keep more dependencies than we actually need.
Signed-off-by: Dmitriy Zaporozhets dmitriy.zaporozhets@gmail.com