security page (id)
uncomment security sitelinks (id)
Translate 2.1.0 is released in ko.
Fix minor grammar
Fix 2.1.0 release entries (s/Decimal/Rational/g)
(ko) Fix old news 2013-11-21-fukuoka-ruby-award-2014.md
Translate 2013-12-21-semantic-versioning-after-2-1-0 into ko
Add semver's korean link
Translate 2013-12-20-ruby-2-1-0-rc1-is-released into ko
Minor grammer tweaks
update about page
match nuances
fix some spacing, typo. remove japanese characters.
Update documentation/quickstart (ko)
Update documentation/quickstart/2 (ko)
Update documentation/quickstart/3 (ko)
Update documentation/quickstart/4 (ko)
Traslate documentation/success-stories (ko)
update documentation (ko)