Upgrade the CI scripts to 1.1.1 (#299)

Fixes failures on linux because of missing conda dependencies taken from
the defaults channel.

Author: leouieda

.travis.yml

@@ -118,7 +118,7 @@ before_install:
       fi
     - cd "$TRAVIS_BUILD_DIR"
     # Get the Fatiando CI scripts
-    - git clone --branch=1.0.0 --depth=1 https://github.com/fatiando/continuous-integration.git
+    - git clone --branch=1.1.1 --depth=1 https://github.com/fatiando/continuous-integration.git
     # Download and install miniconda and setup dependencies
     # Need to source the script to set the PATH variable globaly
     - source continuous-integration/travis/setup-miniconda.sh