update to readme

README.md

@@ -15,6 +15,7 @@ This README aims to document functionality of backend as well as required steps
   - [COOP and Managing User Data Load](#coop-and-managing-user-data-load)
   - [Product Data Load](#product-data-load)
 - [GeoIP Setup](#geoip-setup)
+- [Tags](#tags)
 - [Development Utils](#development-utils)
   - [Fake product data generation](#fake-product-data-generation)
 
@@ -257,6 +258,22 @@ Optional:
   `sudo apt install libmaxminddb0 libmaxminddb-dev mmdb-bin`
 
 
+## Tags
+
+Both `Company` and `Product` models make use of tags.
+
+### Load shopping taxonomy
+
+To create the initial set of tags, we can use the `addtaxonomy` management command.
+Reads the data from `datasets/shop-taxonomy.es-ES.txt` which is from google shopping
+
+
+### Top-level tags
+
+In order to extract the top level tags for use as categories, we can use the `extractparenttas` management command.
+It saves the results to `datasets/top_tags.txt`
+
+
 ## Development Utils
 
 ### Fake product data generation