Modern mustache defines the 'mustache' module for use under both NPM
and bower. Define that here so we can use require('mustache') in
TypeScript without complaint.
For example, the documentation for Mustache.js shows the following:
var compiledTemplate = Mustache.compile(stringTemplate);
var templateOutput = compiledTemplate(templateData);
This enables each definition to have a readme if necessary.
Also a .json metadata file to help with package managers.
And last, to have different versions of the definitions.
