Work around relative import in modelverse.py

wrappers/modelverse.py

@@ -1,10 +1,14 @@
 from sccd.runtime.statecharts_core import Event
 import sccd.runtime.socket2event as socket2event
+
+import sys
+sys.path.append("wrappers")
 import modelverse_SCCD as modelverse_SCCD
+
 import time
 import threading
 
-import sys
+
 if sys.version_info[0] < 3:
     from urllib2 import urlopen as urlopen
     from urllib2 import Request as Request