add stream definition provider
Merge pull request #13 from isururanawaka/master

add stream definition provider
fixed a typo
Merge pull request #14 from tishan89/master

fixed a typo
move bucket spiltter to wihidum/core from cep/core
bucket splitter method
Merge pull request #15 from isururanawaka/master

Bucket Splitter
Merge pull request #16 from sacjaya/master

Test
Adding inputAdapt and outputAdapt methods