Merge branch 'release-3.1'
Merge branch 'develop'
Merge branch 'develop'
Add configuration option to set time enabled to true
Add variables and logic to support configuring the time slider to be enabled by default
Merge branch '#7/add-enable-time-config-option' into develop
Listen to load and load error on ArcGISHeatMapLayer, display messages accordingly.
Update layer design patterns similar to ArcGIS API for Flex layers.

Updated documentation for properties and examples.