Try Conda in before script

Author: charleskawczynski

.travis.yml

@@ -31,6 +31,11 @@ before_script:
       brew update
       brew upgrade cmake
     fi
+    if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+      julia -e 'using Pkg; Pkg.add("Conda")'
+      julia -e 'using Conda; Conda.add("scikit-learn")'
+      julia -e 'using Pkg; Pkg.build("PyCall"); Pkg.update()'
+    fi
 
 after_success:
   # push coverage results to Codecov