Add SynapseReader skeleton code to replace CountDataPointConverter in the future.
Insert newline at the end.
Increase batch size from 2 MB to 6 MB.
Add more unit tests.
TODO: Skip files already processed

Speed up processing by skipping files that have already been processed.
Merge pull request #37 from eric-wu/master

Light refactoring; fix formatting issues, misspellings; more unit tests, place holders