Grant Kelly sierranevadan

## retryPromise.js
/*
 * Retry a Promise until success or max tries exceeded.
 *
 * @param factory {Function} A function that generates the Promise to try.
 * @param validator {Function} A function that resolves if the result from `factory` is valid,
 *                             and throws an error if the result is invalid.
 * @param tries {Integer} The max number of attempts.
 * @param delay {Integer} The first amount of time to wait between attempts, in milliseconds.
 *                        Subsequent attempts will wait exponentially more time.
 * @returns {Promise} A Promise that resolves to the result of `factory`.

## gist:8d83a79fd4a6e8f26e43
### Keybase proof

I hereby claim:

  * I am sierranevadan on github.
  * I am grantkelly (https://keybase.io/grantkelly) on keybase.
  * I have a public key whose fingerprint is E26B 4DEC 404E 44FC 60A1  FA39 A0BB C5B6 EA86 785E

To claim this, I am signing this object:
	/*
	* Retry a Promise until success or max tries exceeded.
	*
	* @param factory {Function} A function that generates the Promise to try.
	* @param validator {Function} A function that resolves if the result from `factory` is valid,
	* and throws an error if the result is invalid.
	* @param tries {Integer} The max number of attempts.
	* @param delay {Integer} The first amount of time to wait between attempts, in milliseconds.
	* Subsequent attempts will wait exponentially more time.
	* @returns {Promise} A Promise that resolves to the result of `factory`.
	### Keybase proof

	I hereby claim:

	* I am sierranevadan on github.
	* I am grantkelly (https://keybase.io/grantkelly) on keybase.
	* I have a public key whose fingerprint is E26B 4DEC 404E 44FC 60A1 FA39 A0BB C5B6 EA86 785E

	To claim this, I am signing this object: