code: def create_manifest(self):
          
          self.manifest = {}
          self.manifest['applications'] = [{'name': self.app_name}]
          self.manifest['services'] = []
          self.manifest['env'] = {
                  'PREDIXPY_VERSION': str(predix.version),
                  }
  
          self.write_manifest()
docs: Create a new manifest and write it to
          disk.