Quick-start Azure Resource Manager (ARM) templates for creation of labs, custom images, formulas etc. have been moved to https://github.com/Azure/azure-devtestlab/tree/master/Samples.
ARM templates that can be used to create environments in your labs are available at https://github.com/Azure/azure-devtestlab/tree/master/Environments.