Merge pull request #109 from fantasticfears/ref
authorSam <sam.saffron@gmail.com>
Mon, 9 Mar 2015 23:23:46 +0000 (10:23 +1100)
committerSam <sam.saffron@gmail.com>
Mon, 9 Mar 2015 23:23:46 +0000 (10:23 +1100)
add reference about rubygems china mirror in advanced section


Trivial merge