Almost done
Almost working
feat(build): Added a special property "url-hash-center" which allows to sync the center with an URL param.

Commented here:
https://github.com/tombatossals/angular-leaflet-directive/issues/283
Merge branch 'center-url-params'

Conflicts:
	dist/angular-leaflet-directive.min.js
Merge branch 'master' of github.com:tombatossals/angular-leaflet-directive