[zanata/zanata-client] bcecb2: Add doc for 0install

[GitHub]

  Branch: refs/heads/0install
  Home:   https://github.com/zanata/zanata-client
  Commit: bcecb27fa00e8a183173feb73b7a69e4c11ebfd3
      https://github.com/zanata/zanata-client/commit/bcecb27fa00e8a183173feb73b7a69e4c11ebfd3
  Author: Alex Eng <aeng at redhat.com>
  Date:   2015-06-22 (Mon, 22 Jun 2015)

  Changed paths:
    A docs/0install/setup.md
    M docs/installation.md
    M mkdocs.yml

  Log Message:
  -----------
  Add doc for 0install