Update readme config to show allowing leaflet opts
Add and test module for handling tile layers
Move traceur runtime out of build tool

There seems to be an issue with using bundle.add(es6ify.runtime)
where certain libs. eg. moment end up as an empty {}
Moving the runtime out into a separate html include before the
bundle fixes this. Lame. Will report an issue
Use tile layer manger in main script
Package.json changes
Refactor branching logic
Fix tests to use local time
Move add and remove layer into functions
Refactor return logic to simplify
Refactor common functionality into separate task
Fix magic numbers :)
Add documentation to tile layer manager
Format and comment input validation
Merge pull request #14 from mediasuitenz/update/to_allow_multiple_base_layers_MAPS-36

Update to allow multiple base layers