bump version
Merge branch 'release/0.6.2'

Conflicts:
	ChangeLog
	install.sh
Merge branch 'release/0.6.2' into develop
Fix shasum for Jubatus 0.6.2.

Jubatus 0.6.2 was retagged due to compilation failure.
https://github.com/jubatus/jubatus/pull/868
Merge branch 'develop'