Upgrade Nokogiri from v1.6.3.1 to v1.8.1 to fix vulnerability
Upgrade Nokogiri from v1.6.3.1 to v1.8.1 to fix vulnerability

Addresses CVE-2017-9050 [1] which was identified by GitHub's matic
security vulnerability detection.

[1]: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9050

freerange/freeagent_transaction_explainer,freerange/freeagent_transaction_explainer,freerange/freeagent_transaction_explainer