update README

Example_Systems/ProprietarySolver/README.md

@@ -1,15 +1,5 @@
-# Small New England: One Zone
+# Proprietary solver example
 
-**SmallNewEngland** is set of a simplified versions of the more detailed example system RealSystemExample. It is condensed for easy comprehension and quick testing of different components of the GenX. **SmallNewEngland/OneZone** is our most basic model, a one-year example with hourly resolution containing only one zone representing New England. The model includes only natural gas, solar PV, wind, and lithium-ion battery storage with no initial capacity. 
+This demonstrates how to use a proprietary solver such as Gurobi or CPLEX, instead of the default solver HiGHS.
 
-To run the model, first navigate to the example directory at `GenX/Example_Systems/SmallNewEngland/OneZone`:
-
-`cd("Example_Systems/SmallNewEngland/OneZone")`
-
-Next, ensure that your settings in `GenX_settings.yml` are correct. The default settings use the solver Gurobi (`Solver: Gurobi`), time domain reduced input data (`TimeDomainReduction: 1`). Other optional policies include minimum capacity requirements, a capacity reserve margin, and more. A rate-based carbon cap of 50 gCO<sub>2</sub> per kWh is specified in the `CO2_cap.csv` input file.
-
-Once the settings are confirmed, run the model with the `Run.jl` script in the example directory:
-
-`include("Run.jl")`
-
-Once the model has completed, results will write to the `Results` directory.
+See `Run.jl` and the `Solver` setting in `Settings/genx_settings.yml`.