add functionality to set CSW keywords from CKAN tag counts
remove debugging
remove unused lib
Merge pull request #45 from tomkralidis/master

Add requests to deps
Merge branch 'master' of github.com:tomkralidis/ckanext-spatial into csw-keywords
update docstring
small doc fixes
Merge branch 'csw-keywords' of github.com:tomkralidis/ckanext-spatial into tomkralidis-csw-keywords
Merge branch 'tomkralidis-csw-keywords'