Fix missing attribute in Fifo.

.pylintrc

@@ -0,0 +1,3 @@
+[MASTER]
+#py3k
+max-line-length=88

bot_z/utils.py

@@ -53,6 +53,7 @@ class Fifo:
             if err.errno != errno.EEXIST:
                 logger.critical("Could not open control pipe at: %s", fifopath)
                 raise
+        self.path = fifopath
         self.fh = open(fifopath, mode)
 
     def __iter__(self):  # pragma: noqa