BLD: Remove conditional by specifying prefix for miniconda

Don't need quotes around flake8 command

.travis.yml

@@ -13,8 +13,8 @@ matrix:
 before_install:
   - if [ ${TRAVIS_PYTHON_VERSION:0:1} == "2" ]; then wget https://repo.continuum.io/miniconda/Miniconda-3.7.0-Linux-x86_64.sh -O miniconda.sh; else wget https://repo.continuum.io/miniconda/Miniconda3-3.7.0-Linux-x86_64.sh -O miniconda.sh; fi
   - chmod +x miniconda.sh
-  - ./miniconda.sh -b
-  - if [ ${TRAVIS_PYTHON_VERSION:0:1} == "2" ]; then export PATH=/home/travis/miniconda/bin:$PATH; else export PATH=/home/travis/miniconda3/bin:$PATH; fi
+  - ./miniconda.sh -b -p $HOME/miniconda
+  - export PATH="$HOME/miniconda/bin:$PATH"
 install:
   - conda create -n testenv --yes pip python=$TRAVIS_PYTHON_VERSION
   - source activate testenv
@@ -27,7 +27,7 @@ install:
   - pip install -e .
 before_script:
   - pip freeze | sort
-  - "flake8 zipline tests"
+  - flake8 zipline tests
 script:
   - nosetests --with-timer --exclude=^test_examples --with-coverage --cover-package=zipline --timer-top-n=15
 after_success: