Description
Right now in the R console if you have an rdd named say `distData`, then typing `distData` on the console shows something like
An object of class "RDD" Slot "env": <environment: 0x7f9181f52188> Slot "jrdd": Java ref type org.apache.spark.api.java.JavaRDD id 86
We should improve this by showing something like in Python
ParallelCollectionRDD[0] at parallelize at PythonRDD.scala:393