add floorplan example

README.md

@@ -4,6 +4,9 @@ Repo contains working sketchup model of the property.
 ## prelim model
 ![prelim](images/prelim.png)
 
+## prelim ground floorplan
+![prelim](images/floorplans/50-ground.png)
+
 
 ## property history
 In November 1990 David Erickson on behalf of some dude with initials S.S. setup a corperation in Des Moines IA under the name SRS Incorporated.  SRS then sold the property to a developer that had been formed two years prior in March 1988 called Casa Construction, Ltd.  It looks like Casa Construction was under control of Cynthia K Morris for the duration until march 2009 when Casa Construction dissolved.  Casa Construcation also operated as Real Estate Resource Group and operated out of 1401 NE 56th St, 50327.  This information was pulled from the Iowa Secretary of State [website](https://api.sos.iowa.gov/).