Updates per issue 2650

travis-ci/travis-ci#2650

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
-  - "2.6"
   - "2.7"
   - "3.2"
   - "3.3"
@@ -13,9 +12,8 @@ python:
   - "nightly" # currently points to 3.7-dev
 # Scipy first because it has apt dependencies
 before_install:
-  - sudo apt-get build-dep python-scipy
-  - pip install coveralls
-  - pip install scipy
+ - pip install --upgrade pip setuptools wheel
+ - pip install --only-binary=numpy,scipy numpy scipy
 # command to install dependencies
 install: "pip install -r requirements.txt"
 # command to run tests