Update README.md

Author: dhilpipre

README.md

@@ -23,8 +23,7 @@ Provides instrumentation for Kotlin Coroutines.  In particular it will trace the
 
 Kotlin-Coroutines-1.0 - all 1.0.x versions. 
 Kotlin-Coroutines-1.1 - all 1.1.x versions.  
-Kotlin-Coroutines-1.2 - all 1.2.x versions.  
-Kotlin-Coroutines-1.3 - all 1.3.x versions.   
+Kotlin-Coroutines-1.2 - all 1.2.x and 1.3.x versions.   
 Kotlin-Coroutines-1.4 - all 1.4.x and later versions.   
 
 ## Installation
@@ -34,6 +33,10 @@ In the New Relic Java Agent directory (directory containing newrelic.jar), creat
 Copy the jars into the extensions directory.   
 Restart the application.   
 
+## Verification
+The easiest way to see if the instrumentation has been loaded by the Java Agent is to look for the Java Agent UI's Metric Explorer and enter "supportability/weaveinstrumentation/loaded/com.newrelic.instrumentation.labs.kotlin-coroutines".  If a metric is reported then the agent has loaded the instrumentation appropriate to the version of Kotlin Coroutines that you are using.   
+If no metric is displayed, then check for "supportability/weaveinstrumentation/skipped/com.newrelic.instrumentation.labs.kotlin-coroutines".  If no metrics are displayed verify that the instrumentation jars have been deployed to the extensions directory and that the user id that runs the application has read access.    
+
 ## Getting Started
 
 After deployment of the instrumentation jars, you should be able to see the invocation of a coroutine from start to finish across any threads that it executes on.