Update test env

.travis.yml

@@ -20,7 +20,7 @@ matrix:
     include:
 
         # Also test Astropy dev with remote data
-        - python: 3.5
+        - python: 3.6
           env: ASTROPY_VERSION=development MAIN_CMD='pytest --cdbs pysynphot'
 
 install:
@@ -36,7 +36,7 @@ install:
     # commands in the install: section below.
 
     - git clone git://github.com/astropy/ci-helpers.git
-    - source ci-helpers/travis/setup_conda_$TRAVIS_OS_NAME.sh
+    - source ci-helpers/travis/setup_conda.sh
 
     # As described above, using ci-helpers, you should be able to set up an
     # environment with dependencies installed using conda and pip, but in some

setup.cfg

@@ -1,3 +1,4 @@
 [tool:pytest]
 minversion = 3.0
 norecursedirs = build doc/build commissioning planning relic pysynphot/src
+addopts = -p no:warnings