added screenshot.

Signed-off-by: tanji <nicholastanjerome@gmail.com>
add screenshot in README

Signed-off-by: tanji <nicholastanjerome@gmail.com>
Merge branch 'master' of https://github.com/nicolaisi/idata

Conflicts:
	README.md

Signed-off-by: tanji <nicholastanjerome@gmail.com>