Add Python 3.6 to appveyor and travis

Author: geraintpalmer

.travis.yml

@@ -3,6 +3,7 @@ python:
   - 2.7
   - 3.4
   - 3.5
+  - 3.6
 
 cache:
   directories:

appveyor.yml

@@ -1,5 +1,6 @@
 environment:
   matrix:
+    - PYTHON: "C:\\Python36"
     - PYTHON: "C:\\Python35"
     - PYTHON: "C:\\Python34"
     - PYTHON: "C:\\Python27"

docs/index.rst

@@ -8,7 +8,7 @@ Ciw is a discrete event simulation library for open queueing networks.
 Its core features include the capability to simulate networks of queues, multiple customer classes, and implementation of Type I blocking for restricted networks.
 A number of other features are also implemented, including priorities, baulking, schedules, and deadlock detection.
 
-Please note that Ciw is currently supported for and regularly tested on Python versions 2.7, 3.4 and 3.5.
+Please note that Ciw is currently supported for and regularly tested on Python versions 2.7, 3.4, 3.5 and 3.6.
 (However, for the documentation we assume Python 3 is used.)
 
 Contents: