resolve google key paths relative to Vagrantfile, not cwd

[luto]

fixes #159

[Temikus]

LGTM! Thanks @luto

@erjohnso - can you please merge?

[erjohnso]

Thanks for the contribution @luto!

And thanks for the review @Temikus

[luto]

Thanks for the merge!
@erjohnso is there a time frame of the next release?

[Temikus]

@luto Sorry for the late response.

So it looks like releasing a new version is not entirely trivial due to some dependency issues and the fact that bundler now disallows the hack that Vagrant uses to load up plugins in development.

I'll need some time to wrangle with it and do a prerelease.

I expect to address this sometime this/next week.

[Temikus]

@luto 1.0.0 released last week. Let me know if you have any questions.

[luto]

@Temikus Works great. Thanks!