Merge pull request #224 from edenman/patch-1

Make it clear that you have to runAffectedUnitTests from the sample dir

Author: joshafeinberg

README.md

@@ -195,8 +195,9 @@ To run this on the sample app:
 ./gradlew :affectedmoduledetector:publishToMavenLocal
 ```
 
-2. Try running the following command:
+2. Try running the following commands:
 ```
+cd sample
  ./gradlew runAffectedUnitTests -Paffected_module_detector.enable
 ```