Update Bats repository

[scontini76]

the current repository isn't maintained anymore, Bats development is going forward on https://github.com/bats-core/bats-core

[coveralls]

Coverage remained the same at 99.048% when pulling 58ec85a on scontini76:patch-1 into 9462f7d on infertux:master.

[tomeon]

@scontini76 -- this LGTM. @infertux -- want to leave a link to the old Bats repo for posterity, or does it suffice that the bats-core repo itself links to the original sstephenson repo?

[infertux]

@scontini76 Good catch, thank you!

does it suffice that the bats-core repo itself links to the original sstephenson repo

@tomeon I think it does.

[scontini76]

You are welcome!

The only clear evidence about the past of bats-core is the copyright to Sam Stephenson. On the other side the https://github.com/sstephenson/bats/ is really abandoned and I see many that opens bugs and pulls request without success (ex. sstephenson/bats#262, I had the same problem in the past).

So, even if there are no links to the original repository I think that is better for users to don't be confused by old useless link, just my 2c!

Thank you for the merge!