implemented ACL and pagination in /layers/<slug>/nodes/
Update README.md
coordinates fielld now can accept a list too
restricted layers API POST to admins and staff only
secured nodes API detail + added delete method
supports access level to images API
completed and secured image API, tests and cleanup
Merge branch 'refactoring' of github.com:nemesisdesign/nodeshot into refactoring
better documentation for nodes and images API
Nodelist linked to map on UI - correct json format