Build error on osx el capitan

[stephen-lane]

I get the following error when I run mvn tomcat7:run within the atmosphere-samples directory. Maven 3.3.9 Java 1.8.0_51

`INFO: Starting service Tomcat Jun 27, 2017 11:04:45 PM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/7.0.37 Jun 27, 2017 11:04:45 PM org.apache.catalina.core.StandardContext resourcesStart SEVERE: Error starting static Resources java.lang.IllegalArgumentException: Document base /Users/stephenlane/Work/Projects/Atmosphere/atmosphere-samples/samples/chat/target/atmosphere-chat does not exist or is not a readable directory at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:138) at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4912) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5092) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

Jun 27, 2017 11:04:45 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Error in resourceStart() Jun 27, 2017 11:04:45 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Error getConfigured Jun 27, 2017 11:04:45 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Context [] startup failed due to previous errors Jun 27, 2017 11:04:45 PM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-bio-8080"]`