Merge branch 'master' into MatrixFactorizationModel-fix

.gitignore

README.md

assembly/lib/PY4J_LICENSE.txt

assembly/lib/PY4J_VERSION.txt

assembly/lib/net/sf/py4j/py4j/0.7/py4j-0.7.jar

assembly/lib/net/sf/py4j/py4j/0.7/py4j-0.7.pom

assembly/lib/net/sf/py4j/py4j/maven-metadata-local.xml

assembly/pom.xml

assembly/src/main/assembly/assembly.xml

bin/compute-classpath.cmd

bin/compute-classpath.sh

bin/pyspark

bin/pyspark.cmd

bin/pyspark2.cmd

bin/run-example

bin/run-example.cmd

bin/run-example2.cmd

bin/spark-class

bin/spark-class.cmd

bin/spark-class2.cmd