Fix broken specs

Reported here:

  https://wincent.com/issues/2111

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Ignore huge benchmark.yml file in exported archives.

This file bumps the release archive size from 37,4 kB to 2.2 MB. This is
quite huge space saving for Fedora's SRPM package.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Merge branch 'voxik/remove-benchmark.yml'

* voxik/remove-benchmark.yml:
  Ignore huge benchmark.yml file in exported archives.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Add Vít Ondruch to the list of contributors

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Update docs for 1.5.1 release

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Fix broken date in gemspec

Change some single quotes to doubles along the way.

Signed-off-by: Wincent Colaiuta <win@wincent.com>