Fix convert to copy the dependency install script in the correct cases (#64)
Fix convert to copy the dependency install script in the correct cases (#64)

The install script should be copied when there is a package.json with or
without the framework dependency, not when there is not package.json.
GoogleCloudPlatform/functions-framework-nodejs,GoogleCloudPlatform/functions-framework-nodejs,GoogleCloudPlatform/functions-framework-nodejs