Merge pull request #115 from fwitzke/r1-dev

[r1-dev] styling marker with label example
doCluster option is now watched and will update / switch back and forth between clustering and not clustering.
working MarkerClusterOptions with example.
Merge pull request #120 from trafficland/feature/marker_cluster_options_issue_109

Feature/marker cluster options fixes issue 109
Put all the other examples back. Reset example to use minified js for angular-google-maps.