DOCS-11200 - Updating install_compass install docs for Linux and Mac

Author: jeff-allen-mongo

source/reference/program/install_compass.txt

@@ -1,7 +1,5 @@
 .. _install-compass:
 
-:orphan:
-
 ===================
 ``install_compass``
 ===================
@@ -19,36 +17,84 @@
 Synopsis
 --------
 
-:binary:`~bin.install_compass` is a platform-specific installation script
-for :ref:`MongoDB Compass Community Edition <compass-index>`.
+:binary:`~bin.install_compass` (``Install-Compass`` in Windows) is a
+platform-specific installation script for
+:ref:`MongoDB Compass <compass-index>`.
+
+If downloaded as a part of the
+`MongoDB Enterprise Server <https://www.mongodb.com/download-center#enterprise>`_
+package, the ``install_compass`` script installs the standard edition
+of :ref:`MongoDB Compass <compass-index>`.
+
+If downloaded as part of the
+`MongoDB Community Server <https://www.mongodb.com/download-center#community>`_
+package, the ``install_compass`` script installs
+:ref:`MongoDB Compass Community edition <compass-index>`.
 
 Installation
 ------------
 
-Linux / MacOS
+.. note::
+
+   The ``install_compass`` script first removes and replaces any
+   previously installed versions of the same |compass| edition (either
+   |compass| or |compass| Community).
+
+   .. example::
+
+       If you run the ``install_compass`` script installed as part of
+       MongoDB Community Server 3.6, the script removes any installed
+       versions of |compass| Community and installs a compatible
+       version of Compass Community.
+
+Linux / macOS
 ~~~~~~~~~~~~~
 
-On Linux / MacOS systems, navigate to the directory where the
-``install_compass`` script was downloaded and run the following command
-to execute the script and install MongoDB Compass:
+On Linux and macOS platforms the ``install_compass`` script is a Unix
+executable script included in the MongoDB Server download. The script
+is packaged with the download for each platform.
+
+1. Change to the ``bin`` directory under the MongoDB Server
+   download directory:
 
-.. class:: copyable-code
-.. code-block:: sh
+   .. class:: copyable-code
+   .. code-block:: sh
 
-   python install_compass
+      cd <installDirectory>/bin
+
+2. Install |compass| using the ``install_compass`` script:
+
+   .. class:: copyable-code
+   .. code-block:: sh
+
+      ./install_compass
 
 Windows
 ~~~~~~~
 
-On Windows systems, the ``install_compass`` script is a PowerShell
-script included in the the MongoDB Server archive download.
+On Windows platforms the ``Install-Compass`` script is a PowerShell
+script included in both the MongoDB Server ``.zip`` archive and
+``.msi`` installer downloads.
+
+From the Windows Command Prompt:
+
+1. Change to the ``bin`` directory under the MongoDB Server
+   download directory:
+
+   .. class:: copyable-code
+   .. code-block:: none
+
+      cd <installDirectory>\bin
 
-Navigate to the directory where the ``Install-Compass.ps1`` file was
-downloaded and run the following command to execute the script and
-install MongoDB Compass:
+2. Install |compass| using the ``install_compass`` script:
 
-.. class:: copyable-code
-.. code-block:: none
+   .. class:: copyable-code
+   .. code-block:: none
 
-   powershell .\Install-Compass.ps1
+      powershell .\Install-Compass.ps1
 
+Alternatively, if using the ``.msi`` installer for MongoDB Server for
+Windows, during installation you are presented with a checkbox
+indicating whether to install |compass| with MongoDB server. If
+checked, the installer automatically executes the ``install_compass``
+script.