Fran Bermejo

Results 3 issues of Fran Bermejo

Hi, because of Tecsisa/constructr-consul#49, I think it is necessary to add a `close()` method to `Coordination`, in order to perform resource release on system shutdown in a clean, elegant way....

Closes #49 This cannot be merged until https://github.com/hseeberger/constructr/pull/169 has been merged and a new version of ConstructR has been released.