GEOMESA-270,269,254 Improve ingest in geomesa-tools,

* Fixed up csv parser in SVIngest so that quotes are not requried
  around geometry field, updated readme.
* Ingest command now splits up into subcommands per format.
* Added dependency CsvReader for tsv/csv parsing
* Added back lat/lon field csv/tsv ingest method for adding point data
https://github.com/ccri/geomesa-shell/blob/master/geomesa-shell-distributed-runtime/src/main/scala/geomesa/core/util/shell/IngestFeatureCommand.scala, I believe it will be necessary for scalding.