[FAB-2789] Document minimum Docker Compose version

The docs specify the Docker version but not the Docker
Compose version.  Add Docker Compose 1.8.1+ as prereq.
Also changes MacOSX to macOS as that's what Apple is
using these days

https://jira.hyperledger.org/browse/FAB-2789

[ci-skip]

Change-Id: I62e4adb78126e14e3a4e59a6e77cc2f2891b6283
Signed-off-by: Gari Singh <gari.r.singh@gmail.com>

docs/source/dev-setup/devenv.rst

@@ -4,15 +4,15 @@ Setting up the development environment
 Overview
 ~~~~~~~~
 
-Through the v0.6 release, the development environment utilized Vagrant
+Prior to the v1.0.0 release, the development environment utilized Vagrant
 running an Ubuntu image, which in turn launched Docker containers as a
 means of ensuring a consistent experience for developers who might be
-working with varying platforms, such as MacOSX, Windows, Linux, or
+working with varying platforms, such as macOS, Windows, Linux, or
 whatever. Advances in Docker have enabled native support on the most
-popular development platforms: MacOSX and Windows. Hence, we have
+popular development platforms: macOS and Windows. Hence, we have
 reworked our build to take full advantage of these advances. While we
 still maintain a Vagrant based approach that can be used for older
-versions of MacOSX and Windows that Docker does not support, we strongly
+versions of macOS and Windows that Docker does not support, we strongly
 encourage that the non-Vagrant development setup be used.
 
 Note that while the Vagrant-based development setup could not be used in
@@ -26,12 +26,13 @@ Prerequisites
 -  `Git client <https://git-scm.com/downloads>`__
 -  `Go <https://golang.org/>`__ - 1.7 or later (for releases before
    v1.0, 1.6 or later)
--  For MacOSX,
+-  For macOS,
    `Xcode <https://itunes.apple.com/us/app/xcode/id497799835?mt=12>`__
    must be installed
 -  `Docker <https://www.docker.com/products/overview>`__ - 1.12 or later
+-  `Docker Compose <https://docs.docker.com/compose/>`__ - 1.8.1 or later
 -  `Pip <https://pip.pypa.io/en/stable/installing/>`__
--  (MacOSX) you may need to install gnutar, as MacOSX comes with bsdtar
+-  (macOS) you may need to install gnutar, as macOS comes with bsdtar
    as the default, but the build uses some gnutar flags. You can use
    Homebrew to install it as follows:
 
@@ -123,7 +124,7 @@ Boostrapping the VM using Vagrant
 
 If you are planning on using the Vagrant developer environment, the
 following steps apply. **Again, we recommend against its use except for
-developers that are limited to older versions of MacOSX and Windows that
+developers that are limited to older versions of macOS and Windows that
 are not supported by Docker for Mac or Windows.**
 
 ::