docs: Creating instructions for Windows users to install sam (aws#605)

README.rst

@@ -123,24 +123,40 @@ containers – SAM CLI will do it automatically as required.
 Windows, Linux, macOS with PIP
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Verify Python Version is 2.7 or 3.6.
+Step 1.  Verify Python Version is 2.7 or 3.6.
 
 .. code:: bash
 
     $ python --version
+ 
+If not installed, go `download python and install <https://www.python.org/downloads/>`_
+
+Step 2. Verify Pip is installed. 
 
 The easiest way to install ``sam`` is to use
 `PIP <https://pypi.org/>`__.
 
+.. code:: bash
+
+    $ pip --version
+
+If not installed, `download and install pip <https://pip.pypa.io/en/stable/installing/>`_
+
+Step 3. Install aws-sam-cli
+
 .. code:: bash
 
    $ pip install --user aws-sam-cli
 
-**Adjust your PATH** to include Python scripts installed under User's directory.
+Step 4. **Adjust your PATH** to include Python scripts installed under User's directory.
+
+macOS & Linux
+^^^^^^^^^^^^^
+
+In Unix/Mac systems the command ``python -m site --user-base`` typically print ``~/.local`` path, so that you'll need to add ``/bin`` to obtain the script path
 
-**NOTE**: As explained in the `Python Developer's Guide <https://www.python.org/dev/peps/pep-0370/#specification>`__, the User's directory where the scripts are installed is ``~/.local/bin`` for Unix/Mac and ``%APPDATA%\Python\Scripts`` for Windows.
+**NOTE**: As explained in the `Python Developer's Guide <https://www.python.org/dev/peps/pep-0370/#specification>`__, the User's directory where the scripts are installed is ``~/.local/bin`` for Unix/Mac.
 
-The Python command can help to detect the correct path. However, in Unix/Mac systems the command ``python -m site --user-base`` typically print ``~/.local`` path, so that you'll need to add ``/bin`` to obtain the script path, while in Windows systems the command ``py -m site --user-site`` typically print ``%APPDATA%\Roaming\Python<VERSION>\site-packages``, so you'll need to remove the last ``\site-packages`` folder and replace it with the ``\Scripts`` one.
 
 .. code:: bash
 
@@ -159,6 +175,39 @@ Restart or Open up a new terminal and verify that the installation worked:
    # Restart current shell
    $ exec "$SHELL"
    $ sam --version
+   
+Windows
+^^^^^^^
+
+In Windows systems the command ``py -m site --user-site`` typically print ``%APPDATA%\Roaming\Python<VERSION>\site-packages``, so you'll need to remove the last ``\site-packages`` folder and replace it with the ``\Scripts`` one.
+
+.. code:: bash
+
+   $ python -m site --user-base
+   
+Using file explorer, go to the folder indicated in the output, and look for the ``Scripts`` folder. Visually confirm that sam Application is inside this folder. 
+
+Copy the File Path.
+
+**NOTE**: As explained in the `Python Developer's Guide <https://www.python.org/dev/peps/pep-0370/#specification>`__, the User's directory where the scripts are installed is ``%APPDATA%\Python\Scripts`` for Windows.
+
+Seach Windows for ``Edit the system environment variables``.
+
+Select **Enviromental Variables**.
+
+Under **System variables**, select **Path**.
+
+Select **New** and enter the file path to the Python Scripts folder. 
+
+Step 5. Verify that sam is installed
+
+Restart or Open up a new terminal and verify that the installation worked:
+
+.. code:: bash
+
+   # Restart current shell
+   $ sam --version
+
 
 Upgrading
 ~~~~~~~~~~