Hi! In this doc http://spark.apache.org/docs/latest/programming-guide.html#initializing-spark initialization is described by SparkContext. Do you think is it reasonable to change it to SparkSession or just mentioned it at the end? I can prepare it and make PR for this, but want to know your opinion at first. The same for quickstart: http://spark.apache.org/docs/latest/quick-start.html#self-contained-applications
-- Kind regards/ Pozdrawiam, Wojciech Indyk
