Adds Research notes

Author: Warren Buckley

src/Umbraco.Forms.Extensions.Crm.Hubspot/readme.md

@@ -1,2 +1,9 @@
 # Umbraco.Forms.Extensions.Crm.Hubspot
 This adds a Hubspot extension to your Umbraco Forms installation
+
+## Research
+Hubspot allows you to add additional fields to a Contact but they seem you can only choose from a pre-determined list
+This UI can also set required fields, so what should the workflow do if it does not provide the data required
+
+![Hubspot UI](https://user-images.githubusercontent.com/1389894/122041936-7170aa00-cdd1-11eb-80ac-f9106c439599.png)
+