const HTTP_METHODS = {
  POST: 'post',
  GET: 'get',
  FETCH: 'fetch',
  PUT: 'put',
  DELETE: 'delete'
}

module.exports = HTTP_METHODS

const HTTP_METHODS = {
  POST: 'post',
  GET: 'get',
  FETCH: 'fetch',
  PUT: 'put',
	PATCH: 'patch',
  DELETE: 'delete'
}

module.exports = HTTP_METHODS

Add PATCH to http methods
Add PATCH to http methods 

PATCH is referenced but missing in the HTTP Methods object. 

https://github.com/cosmicjs/cosmicjs-node/blob/master/src/bucket/object.js#L162