Update README.md

Author: eduard93

README.md

@@ -6,8 +6,7 @@ Python adapter via callout for InterSystems Data Platforms.
 1. Load ObjectScript code.
 2. Place callout DLL in `bin` folder.
 3. Check that your `PYTHONHOME` environment variable points to Python 3.6. 
-4. Check that your SYSTEM `PATH` environment variable has PYTHONHOME.
-5. Execute: `do ##class(isc.py.test.CannibalizationData).Import()` to populate test data
+4. Check that your SYSTEM `PATH` environment variable has `PYTHONHOME` variable (or directory it points to).
 
 # Use
 
@@ -27,10 +26,22 @@ do ##class(isc.py.Callout).Finalize()
 write ##class(isc.py.Callout).Unload()
 ```
 
+# Test Business Process
+
+Along with callout code and Interoperability adapter we supply a test production and test Business Process. To use them:
+
+1. In OS bash execute `python -m pip install  pyodbc pandas matplotlib seaborn`. 
+2. Execute: `do ##class(isc.py.test.CannibalizationData).Import()` to populate test data.
+3. Create ODBC connection to the namespace with data
+4. In test Business Process `isc.py.test.Process` edit annotation for `Correlation Matrix: Tabular` call, specifying correct ODBC DSN in line 3
+5. Edit annotation for `Correlation Matrix: Graph` call, specifying valid filepath for `f.savefig` function.
+6. Save and compile business process.
+7. Start `isc.py.test.Production` production.
+8. Send empty `Ens.Request` mesage to the `isc.py.test.Process`.
+
+
 
 # Development
 
 Development of ObjectScript is done via [cache-tort-git](https://github.com/MakarovS96/cache-tort-git) in UDL mode. 
 Development of C code is done in Eclipse.
-
-