Added slug field
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Added link to layers
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Added watercolor maps from stamen
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Update README.md
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Hopefully a proper fix for issue #17.