correctly store inter_byte_timeout passed to __init__, fix for #22
diff --git a/serial/serialutil.py b/serial/serialutil.py
index e2aa6cd..5e1e490 100644
--- a/serial/serialutil.py
+++ b/serial/serialutil.py
@@ -164,7 +164,7 @@
         self.xonxoff = xonxoff
         self.rtscts = rtscts
         self.dsrdtr = dsrdtr
-        self.inter_character_timeout = inter_byte_timeout
+        self.inter_byte_timeout = inter_byte_timeout
 
         if port is not None:
             self.open()