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
if there aren't already, it'd be nice to have a fake csv and tsv file in src/test/resources that get parsed as part of the unit test to ensure that it creates an AvroSimpleFeature correctly