modify from chihway
Merge branch 'master' of https://github.com/spthm/bc-ethz
Merge branch 'master' of https://github.com/spthm/bc-ethz
Merge branch 'master' of https://github.com/spthm/bc-ethz
Merge branch 'master' of https://github.com/spthm/bc-ethz
Merge branch 'master' of https://github.com/spthm/bc-ethz

Conflicts:
	willH.txt
Merge branch 'master' of https://github.com/spthm/bc-ethz
Merge branch 'master' of https://github.com/spthm/bc-ethz

Conflicts:
	willH.txt
Merge branch 'master' of https://github.com/spthm/bc-ethz