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.
* Added dependency CsvReader for tsv/csv parsing.
* Added back lat/lon field csv/tsv ingest method for adding point data.
* Added tests for SVIngest, test files, refactoring of SVIngest to be better at error catching.
* Added counts for errors, successes and lines to allow for more informative logger messages.
* Added check to not create the schema for the data store if extant.
* Made lineToFeature make the date-time object if abscent from intermediate simplefeature.