adding convenience method for HEAD
Merge pull request #70 from sjhitchner/feature-HEAD-method

adding convenience method for HEAD
add RecoverHandler
changed RecoverHandleFunction signature to allow more control of the http response
add package var LogInfo for injectable logging
fixed bug in detect 406: Not Acceptable
fetching and unmarshalling the apis
work on example output, add missing Operation in example user-service
uribuilder work
minimal client working
Merge branch 'clientgen' of https://github.com/emicklei/go-restful into clientgen