Add catalog setup to readme

Author: venkatesh-sivaraman

readme.md

@@ -8,23 +8,33 @@ Follow these instructions to set up and run your own instance of the FireRoad se
 
 ```
 conda create -n fireroad python=2.7
-source activate fireroad
+conda activate fireroad
 ```
 
 Then, enter the repo directory and run the setup script, which will install any necessary packages and set up the database.
 
 ```
-$ cd fireroad-server
-$ ./setup.sh
+cd fireroad-server
+./setup.sh
 ```
 
+To set up a catalog (including courses and requirements lists):
+
+```
+./setup_catalog.sh
+```
+
+This script will prompt you to download a copy of the course catalog from the [prod site](https://fireroad.mit.edu/courseupdater/download_data) if you have not already. Otherwise, you can run the catalog setup script without pre-initialized catalogs, then run the scraper yourself following the instructions in `data/readme.md`.
+
+## Database Settings
+
 Note that the project contains three Django settings modules: `fireroad/settings.py` (local development), `fireroad/settings_dev.py` (dev server), and `fireroad_settings_prod.py` (prod server). When making changes to the settings, please make sure to change the file appropriate to the environment on which you want the changes to take effect (and note that the latter two import the base `settings.py` file). In order to specify which settings module should be used, you will need to set the `DJANGO_SETTINGS_MODULE` environment variable to `fireroad.settings{VARIANT}`, and change the default value specified in `fireroad/wsgi.py` if deploying with WSGI.
 
 Depending on your settings, there may be additional files that you can add to enable certain capabilities:
 
 * To use a MySQL database, add a `fireroad/dbcreds.py` file that specifies the necessary authentication info as Python variables `dbname`, `username`, `password`, and `host`.
 * To enable sending emails to admins for unresolved edit requests, etc., create an email address with two-factor authentication disabled (gmail works well). Then add a `fireroad/email_creds.py` file that specifies authentication info as a comma-delimited string with three components: the email server (e.g. `smtp.gmail.com`), the email address, and the password for the email account.
 
-### API Endpoints
+## API Endpoints
 
 The FireRoad API is fully documented at [fireroad.mit.edu/reference](https://fireroad.mit.edu/reference) (dev version at [fireroad-dev.mit.edu/reference](https://fireroad-dev.mit.edu/reference)). When submitting PRs that modify the behavior of these endpoints or add new ones, please update the docs in `common/templates/docs` accordingly.