Test with jupyterhub 0.9

- Closes: #78

Author: rkdarst

.travis.yml

@@ -11,13 +11,18 @@ env:
     - JHUB_VER=0.6.1
     - JHUB_VER=0.7.2
     - JHUB_VER=0.8.1
+    - JHUB_VER=0.9.0b2
 matrix:
     include:
     - python: 3.6
       env: JHUB_VER=master
     exclude:
     - python: 3.3
       env: JHUB_VER=0.8.1
+    - python: 3.3
+      env: JHUB_VER=0.9.0b2
+    - python: 3.4
+      env: JHUB_VER=0.9.0b2
     allow_failures:
       - env: JHUB_VER=master
 
@@ -27,7 +32,7 @@ before_install:
     - git clone --quiet --branch $JHUB_VER https://github.com/jupyter/jupyterhub.git jupyterhub
 install:
 # Don't let requirements pull in tornado 5 yet except for jupyterhub master
-    - if [ $JHUB_VER != "master" ]; then pip install "tornado<5.0"; fi
+    - if [ $JHUB_VER != "master" -a $JHUB_VER != "0.9.0b2" ]; then pip install "tornado<5.0"; fi
     - pip install --pre -f travis-wheels/wheelhouse -r jupyterhub/dev-requirements.txt
     - pip install --pre -e jupyterhub