Small correction of OS X paragraph on installation page
unify word `leopard` in ko translation
Merge pull request #642 from marocchino/ko-leopard

unify word `leopard` in ko translation
Ruby 1.9.3 is released.
Fixed commit mistake.
Merge pull request #643 from unak/1.9.3-p545

Ruby 1.9.3 is released.
added rack-protection
fix wrong grammer and spell
Translate Ruby 1.9.3-p545 is released (de)
Ruby 2.1.1 is released
fix typos
add introduction to Ruby 2.1
Add news post for Release 2.0.0-p451.
fix a typo (ticket -> tickets).
fix a typo.
Merge pull request #645 from nurse/release-v2.1.1

Ruby 2.1.1 is released
Merge pull request #646 from nagachika/release_2_0_0_p451

Add news post for Release 2.0.0-p451.
syntax
Fix typo
Merge pull request #647 from Agis-/patch-1

Fix typo