vscode-author-generator use file suffix as template name. eg: js.tpl is the template for *.js files. if the specific template file doesn't exsit, default.tpl will be used.
if you want to add another template, just make sure the template filename is correct. eg: add a file named py.tpl in templates directory will make *.py files add this template info.
notice: [author], [github] will automatically replaced with infomation in your VSCode Configration.