pip install -r requirements.txt added .travis.yml

Author: micahcochran

.travis.yml

@@ -32,6 +32,7 @@ install:
     pip install --upgrade setuptools
     pip install $NUMPY
     pip install $MPL
+    pip install -r requirements.txt
   - |
     cd geos-3.3.3
     export GEOS_DIR=$HOME/.local/