update pyserial to fix 'IOError: [Errno 25] Inappropriate ioctl for device' with pyserial 3.1

dhoomakethu · dhoomakethu · commit 750ead1ef794 · 2017-03-03T09:54:13.000+05:30
diff --git a/requirements b/requirements
@@ -6,5 +6,5 @@ modbus-tk==0.5.4
 pygame==1.9.2
 pyglet==1.2.4
 Pygments==2.1.3
-pyserial==3.1
-requests==2.12.4
+pyserial==3.2.1
+requests==2.12.4
