jtong - add v0.2 barcode query case
jtong - change README from v0~v0.2
jtong - fix README of v0.2
Merge pull request #1 from iamcoach/master

merge #1 latest code
jtong - change test for v2, change output and input style
Merge pull request #2 from jtong-kata/master

add README for v0~0.2