Merge pull request #1 from rctoris/groovy-devel

error messages removed to cleanup output
parameter setting. pose -> posestamped
is_stamped param added
Merge pull request #2 from jihoonl/groovy-devel

parameter setting. pose -> posestamped
searches private node handle to get parameter
Merge pull request #3 from jihoonl/groovy-devel

searches private node handle to get parameter