Remove call to System.exit

This obscures configuration errors.
diff --git a/blobstore-basics/src/main/java/org/jclouds/examples/blobstore/basics/MainApp.java b/blobstore-basics/src/main/java/org/jclouds/examples/blobstore/basics/MainApp.java
index 8975799..6b5813a 100755
--- a/blobstore-basics/src/main/java/org/jclouds/examples/blobstore/basics/MainApp.java
+++ b/blobstore-basics/src/main/java/org/jclouds/examples/blobstore/basics/MainApp.java
@@ -131,7 +131,6 @@
       } finally {
          // Close connecton
          context.close();
-         System.exit(0);
       }
 
    }