message: README.md: update testing docs
diff: @@ -108,34 +108,29 @@ cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=../iOS.cmake -DIOS_PL
  ### Unit-tests
  -To run tests without output:
  -```
  -make test
  -```
  +To run the unit tests:
  -And with output:
  ```
  -make check
  +make unit_tests_runner
  +./unit_tests_runner
  ```
  ### Integration-tests
  -Start PX4 e.g. in SITL using `make posix gazebo` and run the integration tests using the commands
  -below:
  +Start PX4 e.g. in SITL using `make posix gazebo` and run the integration tests use:
  ```
  -make simple_connect
  -integration_tests/simple_connect
  +make integration_tests_runner
  +./integration_tests_runner
  ```
  +To run a single integration test:
  ```
  -make simple_telemetry
  -integration_tests/simple_telemetry
  +./integration_tests_runner --gtest_filter="Telemetry.Simple"
  ```
  -
  +or all telemetry tests:
  ```
  -make simple_hover
  -integration_tests/simple_hover
  +./integration_tests_runner --gtest_filter="Telemetry*"
  ```
  ### Code style
  