Description for writing options in documentation.
Description for writing options in documentation.

#208

This PR adds some writing options in documentation.

Author: hyukjinkwon <gurwls223@gmail.com>

Closes #275 from HyukjinKwon/ISSUE-208-documentation.

falaki/spark-csv,falaki/spark-csv,falaki/spark-csv,databricks/spark-csv,databricks/spark-csv,databricks/spark-csv