GEOMESA-254,269 Improving ingest in GeoMesa-tools

* Fixed up csv parser in SVIngest so that quotes are not required
  around geometry field (except for cases when WKT uses commas like polygons) 
* updated readme.
* Ingest command now splits up into sub-commands per format,  e.g. ingest csv | tsv | etc..
Down here, change parse to ... parseAll(records, s) ....

Definitely make this change since 'flatten'-ing the output of parsing multiple lines would create one array for multiple features.