Merge pull request #32 from sacjaya/Siddhi-3.0.0

Siddhi 3.0.0
Merge pull request #33 from sacjaya/Siddhi-3.0.0

Using eventChunks in processors instead of streamEvents
Merge branch 'Siddhi-3.0.0' of https://github.com/sacjaya/siddhi into Siddhi-3.0.0
Merge branch 'Siddhi-3.0.0' of https://github.com/wso2-dev/siddhi into Siddhi-3.0.0
modified performance samples