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
Can we call getDefaultGeometry ```feature.geometry``` instead of assuming its the last field?