temporary hack to **fix** the -J joint position option (issue #93), sleeping for 1 second to avoid race condition. this branch should only be used for debugging, merge only as a last resort.
Merge pull request #279 from k-okada/93_hydro

temporary hack to **fix** the -J joint position option (issue #93), sleeping for 1 second to avoid race condition. this branch should only be used for debugging, merge only as a last resort.