Upgrade ruby to 2.1.4
Upgrade ruby to 2.1.4

To keep up to date etc.

gds-attic/url-arbiter,chrisroos/url-arbiter,gds-attic/url-arbiter,alphagov/url-arbiter,alphagov/url-arbiter,alphagov/url-arbiter,chrisroos/url-arbiter,chrisroos/url-arbiter,gds-attic/url-arbiter