Readme: More setup information

README.md

@@ -12,7 +12,13 @@ This website uses the Flask library. Flask must be installed before use.
 Directories: `ardupilot` must be within `base`, which must be in the same directory as `CustomBuild`.
 
 ### Directory structure
-The ardupilot directory must be in the same directory as the CustomBuild directory.
+default directory structure is as follows
+```
+/home/<username>
+-CustomBuild
+-base
+--ardupilot
+```
 
 Use `--basedir` to adjust the base directory, the default one is `base`.
 It is expected that you have an environment where ArduPilot can be built. Otherwise, see [https://ardupilot.org/dev/docs/building-setup-linux.html](https://ardupilot.org/dev/docs/building-setup-linux.html)
@@ -33,10 +39,17 @@ To run:
 
 * Install mod_wsgi for python 3:
 ```
-sudo apt-get install libapache2-mod-wsgi-py3 python-dev
+sudo apt-get install apache2 libapache2-mod-wsgi-py3 python3 python3-pip
 ```
-* In `app.wsgi`, specify the app directory (`.../CustomBuild/`).
+
+* update /etc/apache2/envvars
+1. set correct username and group (default is www-data)
+2. add ```export PATH=/opt/gcc-arm-none-eabi-10-2020-q4-major/bin:$PATH``` to end of file (this is default location if you have followed the dev env setup instructions above)
+
 * Copy the config file to `/etc/apache2/sites-available/` and specify the correct directory.
+
+* Edit the file as necessary for your use case
+
 * Enable the file:
 ```
 sudo a2ensite CustomBuild.conf