Add nginxBear

[coala-bot]

nginx can check if the configuration file syntax is correct by running nginx -t -c <configuration file>

Opened via gitter by @yukiisbored

[underyx]

This can also be used: https://github.com/yandex/gixy

[underyx]

Actually, let's move the Gixy thing to #1724

[cornu-ammonis]

So with the Gixy thing moved to another issue, what would address this one?

[yukiisbored]

@cornu-ammonis This one uses the actual nginx program which has linting capabilities

[44rdvark]

Can I work on this one?

[yukiisbored]

There you go @44rdvark

[jayvdb]

@44rdvark , are you still working on this?