created EmulatorCompute node class. Improved rpc interface.
diff --git a/emuvim/dcemulator/net.py b/emuvim/dcemulator/net.py
index 13df531..f5e58d1 100644
--- a/emuvim/dcemulator/net.py
+++ b/emuvim/dcemulator/net.py
@@ -10,7 +10,7 @@
 from mininet.log import setLogLevel, info
 from mininet.link import TCLink, Link
 
-from node import Datacenter
+from node import Datacenter, EmulatorCompute
 
 
 class DCNetwork(object):
@@ -103,7 +103,7 @@
         """
         Wrapper for addDocker method provided by Dockernet.
         """
-        return self.mnet.addDocker( name, **params)
+        return self.mnet.addDocker( name, cls=EmulatorCompute, **params)
 
     def removeDocker( self, name, **params):
         """