diff --git a/README.md b/README.md
index 918e56a..93124ad 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,11 @@
 # coupon-servant
+## Setup
+* put the postgres connection string in `Main.hs`
+* run `stack build` then
+* run `stack exec coupon-servant-exe` to start the server
+
+
+## Testing
+* run `docker pull swaggerapi/swagger-ui` to download swagger-ui container
+* run `docker run -d --name swui -e API_URL="http://localhost:3000/swagger.json" -p 5341:8080/tcp swaggerapi/swagger-ui`
+* point your browser to [swagger-ui](http://localhost:5341)
\ No newline at end of file
diff --git a/src/App.hs b/src/App.hs
index 0d1d596..6b4aff3 100644
--- a/src/App.hs
+++ b/src/App.hs
@@ -95,6 +95,7 @@ computeBill c b = do  productLimit <- couponApplicable
                                             return $ customerLimit $ entityVal <$> cm
                             upsProdCoupon (ProductFlat cf) = do upsertBy (newUprod cf) (newProdCoupon cf b) [ProductCouponPused +=. 1]
                                                                 return ()
+                            --TODO - how to update product table for cart coupons
                             upsProdCoupon _                = return ()
                             priceLimit = couponMin_price c < billAmount b
                             couponUsageLimit = couponUsed c < couponUsage_limit c