spark git commit: [SPARK-16140][MLLIB][SPARKR][DOCS] Group k-means method in generated R doc

Repository: spark Updated Branches: refs/heads/branch-2.0 d96e8c2dd -> 1cde325e2 [SPARK-16140][MLLIB][SPARKR][DOCS] Group k-means method in generated R doc https://issues.apache.org/jira/browse/SPARK-16140 ## What changes were proposed in this pull request? Group the R doc of spark.kmeans,

spark git commit: [SPARK-16140][MLLIB][SPARKR][DOCS] Group k-means method in generated R doc

Repository: spark Updated Branches: refs/heads/master c6a220d75 -> 8c9cd0a7a [SPARK-16140][MLLIB][SPARKR][DOCS] Group k-means method in generated R doc https://issues.apache.org/jira/browse/SPARK-16140 ## What changes were proposed in this pull request? Group the R doc of spark.kmeans,