Add instructions to run test suite

README.md

@@ -30,9 +30,18 @@ Install-Package Casper.Network.SDK.Clients
 dotnet add package Casper.Network.SDK.Clients
 ``` 
 
+## Integration tests
+
+To run the test suite you need to spin up a local NCTL network. We recommend using Docker to quickly have it running. See the instructions [here](https://github.com/make-software/casper-nctl-docker)
+
+When NCTL is running, enter the following command to execute the tests:
+
+```
+dotnet test --settings Casper.Network.SDK.Clients.Test/test.runsettings --filter 'TestCategory~NCTL'
+```
+
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-