tree b75ab5c3361dd791413c5f8e497d7afb06f8aae8
parent d618b13e8ce21a965a01d47e90eb607211a09bdc
author Maximilian Michels <mxm@apache.org> 1469710581 +0200
committer Maximilian Michels <mxm@apache.org> 1469807230 +0200

[docs] require at least Ruby 1.9.0 for building

The json module is bundled with Ruby from 1.9.0 and upwards. This
cures dependency problems with different versions of Ruby.