Update upto Ruby 2.5.1

[jnbt]

As this gem is currently stuck on Google::APIClient with version 0.8.6 we need to manually set the User-Agent header as Google::APIClient::ENV::OS_VERSION includes a invalid newline character.

This change mimics the old user agent so an update should be safe.

[coveralls]

Coverage increased (+1.4%) to 99.93% when pulling 04232b9 on update-ruby into a61a689 on master.

[jnbt]

Tests are OK for all Ruby versions. Only rubocop is crashing / failing for older Ruby versions.

[jnbt]

@sajmoon Can you try the version from this branch?

gem "candy_check", git: "git@github.com:jnbt/candy_check.git", branch: "update-ruby"

[sajmoon]

@jnbt, as I said in the issue, we have verified this fix for our use case and system. We upgraded to 2.4.4, not 2.5.1 though.

I see there are some problems in travis. When can we expect a release of this?

[cheerfulstoic]

We also ran into this going from Ruby 2.3.6 to 2.3.7. We're going to try out the fix to see if it helps (though it looks like the exact same issue, so I imagine it will)

[jnbt]

@cheerfulstoic Have you tried this branch? Any feedback is welcome before releasing this patch.

[sajmoon]

We have migrated to 2.5.1 without any visible problems. 👍

[cheerfulstoic]

We were able to upgrade to 2.3.7 with this patch without problems.

Thanks!

[jnbt]

Released as 0.1.2