Fix

Author: jzuhone

.travis.yml

@@ -60,7 +60,7 @@ matrix:
           name: astropy-dev
 
         - env: CONDA_DEPENDENCIES="matplotlib=3 aplpy yt bottleneck joblib $CONDA_DEPENDENCIES"
-               CONDA_CHANNELS='conda-forge $CONDA_CHANNELS'
+               CONDA_CHANNELS="conda-forge $CONDA_CHANNELS"
                ASTROPY_VERSION='development'
           name: vistools