Revert kill app code

Author: ykumar6

lib/launchApplication.js

@@ -53,6 +53,15 @@ function stop (cb) {
   if (!app.child) {
     return process.nextTick(cb);
   }
-  app.child.once('exit', cb);
-  app.child.kill();
-}
+  console.log('EXEC', '/bin/kill -TERM -- -' + app.child.pid)
+  exec('/bin/kill -TERM -- -' + app.child.pid, stopped);
+
+  function stopped (err) {
+    if (err) {
+      cb(err);
+    } else {
+      cb();
+    }
+    app.child = null;
+  }
+}