add support for open csv
upgrade open csv version to 2.3
fix open csv carriage return test
Merge remote-tracking branch 'origin/master'
add setters for open csv parameters
make internal class package private
fix issue#41: do not show batch result in execution report if it is null
implement FR #40: add processing pipeline
add GreetingTransformer to hello world tutorial
implement FR #44: Add record dispatching API for more efficient parallelism
add tutorial about how to use the new RecordDispatcher API
improve logging
add poison record filter
filter poison records
fix total record number in multi-threaded scenario
remove useless parameter
introduce engine status enumeration
fix typo
remove EasyBatch prefix from class/variable names
add toString to PoisonRecord