[zanata/zanata-server] 0f42fe: removed references to Docker install

[GitHub]

  Branch: refs/heads/doc-update-sep16
  Home:   https://github.com/zanata/zanata-server
  Commit: 0f42fec4fd064b909ba400ff4e249b1d512b04d8
      https://github.com/zanata/zanata-server/commit/0f42fec4fd064b909ba400ff4e249b1d512b04d8
  Author: kgough <kgough at redhat.com>
  Date:   2016-09-12 (Mon, 12 Sep 2016)

  Changed paths:
    M docs/user-guide/system-admin/configuration/installation.md

  Log Message:
  -----------
  removed references to Docker install