Merge pull request #125 from casperdcl/patch-1

fix parse_options bug

Author: gforcada

flake8_isort.py

@@ -24,7 +24,7 @@ def __init__(self, tree, filename, lines):
         self.filename = filename
         self.lines = lines
 
-    def add_options(option_manager):
+    def add_options(self, option_manager):
         option_manager.add_option(
             '--isort-show-traceback',
             action='store_true',