Updated Understanding and debugging Nimbus EVM JSON tests (markdown)

Understanding-and-debugging-Nimbus-EVM-JSON-tests.md

@@ -2,6 +2,20 @@
 
 The Nimbus JSON tests are taken from the [official Ethereum test suite](https://github.com/ethereum/tests). To find out more about the contents of this test suite, please refer to the [official documentation](https://ethereum-tests.readthedocs.io/en/latest/).
 
+You can run all tests with `nimble test`. Based on our config, Nimble will write binaries to `build/` - you can do this manually also, as in the following examples:
+
+Run example:
+```bash
+mkdir -p build
+nim c -o:build/decompile_smart_contract -r examples/decompile_smart_contract.nim
+```
+
+Run Ethereum [JSON-based general state tests](https://github.com/ethereum/tests/):
+```
+mkdir -p build
+nim c -o:build/test_generalstate_json -r --experimental:forLoopMacros tests/test_generalstate_json.nim
+```
+
 ## VMTests
 
 ### JSON structure