Create User module readme

Lambdas/Lists/User/README.md

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+# User Module
+Wraps certain Cognito functionality to provide greater ease of use for the developer than always calling Cognitor directly and using service hooks.
+
+### UserGET
+Retrieves information on a user's cognitoID or email. This Lambda exists for ease of use in retrieving/converting between returns.
+    
+#### Potential Inputs (choose 1)
+  - (query paramter) id: A user email or a Cognito id. Note: relies on the assumption that Cognito ids do not have "@" and emails do
+  - (body element) emailToCheck: A user email
+  - No input (or null/empty string inputs)
+  
+  
+#### Returns:
+  - A User object (if asking for an email, the Cognito id may be incorrect)
+    - No input results in only the Cognito id being populated with the requestor's id.
+    - Should something about the contract be broken, or the user not exist, a null, or null-populated, value will be returned
+
+
+### UserDELETE
+Deletes a user and their data. This Lambda exists to ease database cleanup and sending a farewell email.
+
+#### Inputs:
+None, this only uses the Congito id collected by AWS Gateway
+
+#### Returns:
+null