Use @rejeep's helpful gist.

@rejeep suggested this gist to facilitate my difficulties getting
travis to work.

.travis.yml

@@ -3,7 +3,6 @@ addons:
   apt:
     packages:
     - git
-
 matrix:
   fast_finish: true
   allow_failures:
@@ -15,14 +14,8 @@ python:
 before_install:
   - sudo apt-get -yq update
   - sudo apt-get -yq install git
-  - git clone https://github.com/rejeep/evm.git $HOME/.evm
-  - export PATH=$HOME/.evm/bin:$PATH
-
-  - evm config path /tmp
+  - curl -fsSkL https://gist.github.com/rejeep/ebcd57c3af83b049833b/raw > x.sh && source ./x.sh
   - evm install $EMACS --use --skip
-  - curl -fsSkL https://raw.github.com/cask/cask/master/go | python
-  - export PATH=$HOME/.cask/bin:$PATH
-
   - cask
 install:
   - pip install jupyter==$JUPYTER