install mock for dock building

HolgerPeters · HolgerPeters · commit 51d71ad6b82b · 2015-05-29T16:39:31.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -72,7 +72,7 @@ install:
   # Neihter is installed as a dependency of IPython since they are not used by the IPython console.
   - |
     if [[ $BUILD_DOCS == true ]]; then
-      pip install $PRE numpydoc ipython jsonschema mistune
+      pip install $PRE numpydoc ipython jsonschema mistune mock
       pip install -q $PRE linkchecker
       wget https://github.com/google/fonts/blob/master/ofl/felipa/Felipa-Regular.ttf?raw=true -O Felipa-Regular.ttf
       wget http://mirrors.kernel.org/ubuntu/pool/universe/f/fonts-humor-sans/fonts-humor-sans_1.0-1_all.deb
