Api standardization, feature importance folder

.travis.yml

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+language: python
+python:
+  - 2.7
+ 
+# Setup anaconda
+before_install:
+  - wget http://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh
+  - chmod +x miniconda.sh
+  - ./miniconda.sh -b
+  - export PATH=/home/travis/miniconda/bin:$PATH
+  - conda update --yes conda
+  # The next couple lines fix a crash with multiprocessing on Travis and are not specific to using Miniconda
+  - sudo rm -rf /dev/shm
+  - sudo ln -s /run/shm /dev/shm
+
+# Install packages
+install:
+  - conda install --yes python=$TRAVIS_PYTHON_VERSION atlas numpy scipy matplotlib nose dateutil pandas statsmodels requests requests six scikit-image
+  - python setup.py install
+ 
+# Run test
+script:
+  - nosetests -w ./tests/remote
+