CSVWriteTest
Updating csvreader dependency and clarifying instructions for test files
Adding clearer directory instructions for META-INF/services/org.geotools.data.DataStoreFactorySpi

Conflicts:
	docs/user/tutorial/datastore/source.rst
Adding reader method to instructions

Conflicts:
	docs/user/tutorial/datastore/source.rst
Fix file names for read / write CSVTest