add appdirs to requirements.txt

2017-11-05 00:48:22 +00:00 · 2017-11-05 00:48:22 +00:00 · c558629412
commit c558629412
--- a/requirements.txt
+++ b/requirements.txt
@ -3,3 +3,4 @@ wxPython
 networkx
 shapely
 lxml
+appdirs