update README on how to run local integration test (#553)
update README on how to run local integration test (#553)

* update README on how to run local integration test
nlu90/heron,twitter/heron,tomncooper/heron,moomou/heron,cs564/heron,tomncooper/heron,lewiskan/heron,objmagic/heron,lukess/heron,lukess/heron,streamlio/heron,lucperkins/heron,objmagic/heron,zhangzhonglai/heron,ashvina/heron,wangli1426/heron,objmagic/heron,lucperkins/heron,srkukarni/heron,mycFelix/heron,streamlio/heron,ashvina/heron,huijunwu/heron,huijunwu/heron,twitter/heron,cs564/heron,nlu90/heron,zhangzhonglai/heron,nlu90/heron,huijunwu/heron,lukess/heron,tomncooper/heron,srkukarni/heron,billonahill/heron,streamlio/heron,ashvina/heron,tomncooper/heron,lewiskan/heron,cs564/heron,streamlio/heron,lewiskan/heron,mycFelix/heron,twitter/heron,cliffyg/heron,lewiskan/heron,cs564/heron,tomncooper/heron,cs564/heron,cliffyg/heron,streamlio/heron,billonahill/heron,objmagic/heron,tomncooper/heron,billonahill/heron,lucperkins/heron,cliffyg/heron,mycFelix/heron,billonahill/heron,ashvina/heron,billonahill/heron,twitter/heron,srkukarni/heron,cliffyg/heron,billonahill/heron,huijunwu/heron,zhangzhonglai/heron,ashvina/heron,huijunwu/heron,lukess/heron,cliffyg/heron,huijunwu/heron,cliffyg/heron,moomou/heron,wangli1426/heron,mycFelix/heron,objmagic/heron,srkukarni/heron,streamlio/heron,cliffyg/heron,moomou/heron,wangli1426/heron,lukess/heron,nlu90/heron,lucperkins/heron,cs564/heron,billonahill/heron,mycFelix/heron,cs564/heron,srkukarni/heron,cs564/heron,streamlio/heron,lukess/heron,ashvina/heron,nlu90/heron,wangli1426/heron,nlu90/heron,moomou/heron,objmagic/heron,huijunwu/heron,twitter/heron,twitter/heron,lukess/heron,cs564/heron,wangli1426/heron,huijunwu/heron,ashvina/heron,zhangzhonglai/heron,srkukarni/heron,lewiskan/heron,srkukarni/heron,lukess/heron,ashvina/heron,moomou/heron,nlu90/heron,lewiskan/heron,lewiskan/heron,wangli1426/heron,lucperkins/heron,mycFelix/heron,streamlio/heron,objmagic/heron,lewiskan/heron,cliffyg/heron,cliffyg/heron,objmagic/heron,ashvina/heron,mycFelix/heron,tomncooper/heron,wangli1426/heron,moomou/heron,wangli1426/heron,zhangzhonglai/heron,zhangzhonglai/heron,twitter/heron,moomou/heron,srkukarni/heron,streamlio/heron,nlu90/heron,zhangzhonglai/heron,objmagic/heron,moomou/heron,zhangzhonglai/heron,tomncooper/heron,nlu90/heron,zhangzhonglai/heron,moomou/heron,lukess/heron,lucperkins/heron,lucperkins/heron,tomncooper/heron,billonahill/heron,lewiskan/heron,mycFelix/heron,wangli1426/heron,mycFelix/heron,twitter/heron,lucperkins/heron,billonahill/heron