Added readme for contribution
Added readme for contribution

QubitProducts/dashing-contrib,vStone/dashing-contrib,QubitProducts/dashing-contrib,vStone/dashing-contrib,vStone/dashing-contrib,osterzel/dashing-contrib,mergermarket/dashing-contrib,mergermarket/dashing-contrib,QubitProducts/dashing-contrib,mergermarket/dashing-contrib,osterzel/dashing-contrib,osterzel/dashing-contrib