add docs build instructions to readme

README.md

@@ -42,9 +42,9 @@ to set up SSH.
 * Log in to your USGS GitLab account at [code.usgs.gov](code.usgs.gov).
 
 * Create an SSH key and add it to your GitLab account by following the
-instructions beginning [here](https://code.usgs.gov/help/ssh/README.md#generating-a-new-ssh-key-pair). Follow the instructions under
-**Generating a new SSH key pair** and **Adding an SSH key to your GitLab
-account**.
+instructions beginning [here](https://code.usgs.gov/help/ssh/README.md#generating-a-new-ssh-key-pair).
+Follow the instructions under **Generating a new SSH key pair** and **Adding an
+SSH key to your GitLab account**.
 
   * You want to use RSA when generating a new SSH key pair.
 
@@ -143,3 +143,23 @@ OK
 
 The tests passing is a clear indicator that the FluEgg environment has been set
 up correctly. You're ready to begin working with the code.
+
+#### 8. Build the code documentation
+
+Currently, only the docstrings within the FluEgg code are available in the
+documentation.
+
+To build the documentation, run the command `python setup.py build_sphinx` from
+the prompt. The output will look something like the below text.
+
+```
+(fluegg) C:\path-to-sources\fluegg>python setup.py build_sphinx
+running build_sphinx
+*build process output*
+The HTML pages are in docs\_build\html.
+```
+
+To view the generated HTML documentation, open the file
+`path-to-sources\fluegg\docs\_build\html\index.html` in a browser. Again,
+`path-to-sources\fluegg` is the top-level directory of the FluEgg project on
+your machine.