<NME> .travis.yml
<BEF> language: python
python:
  - "2.7"
  - "3.3"
  - "3.4"
  - "3.5"
  - "3.6"

# command to install dependencies
before_install:
 - "pip install --upgrade pip setuptools wheel"
 - "pip install --only-binary=numpy,scipy numpy scipy"
 - "pip install pandas"
 - "pip install coveralls"
 - "pip install pytest-cov"

# command to execute test suite
script: py.test --cov-report= --cov=pylogit/ tests/
# command to execute test suite
script: py.test --cov-report= --cov=pylogit/ tests/
branches:
  only:
    - master
    - develop

# Send results of tests to coveralls
after_success:
 - coveralls

<MSG> Added pip install of future for python 3. Made sure only python 2.7 and >= 3.4 is tested.

<DFF> @@ -1,7 +1,6 @@
 language: python
 python:
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
   - "3.6"
@@ -13,6 +12,7 @@ before_install:
  - "pip install pandas"
  - "pip install coveralls"
  - "pip install pytest-cov"
+ - "pip install future"
 
 # command to execute test suite
 script: py.test --cov-report= --cov=pylogit/ tests/

Added pip install of future for python 3. Made sure only python 2.7 and >= 3.4 is tested.