Added scikit-learn from Conda

.travis.yml

@@ -32,10 +32,10 @@ addons:
       - unzip
       - python-numpy
       - python-scipy
-      - python-sklearn
 
 before_install:
   - scripts/travis_osx_install.sh
+  - scripts/travis_script.sh
   - git clone https://github.com/dmlc/dmlc-core
   - export TRAVIS=dmlc-core/scripts/travis/
   - export PYTHONPATH=${PYTHONPATH}:${PWD}/python-package

scripts/travis_script.sh

@@ -64,7 +64,7 @@ if [ ${TASK} == "python-package" -o ${TASK} == "python-package3" ]; then
         conda create -n myenv python=2.7
     fi
     source activate myenv
-    conda install numpy scipy pandas matplotlib nose
+    conda install numpy scipy pandas matplotlib nose scikit-learn
     python -m pip install graphviz
 
     make all CXX=${CXX} || exit -1