Edu jfbyers

## FireBasePushIdGenerator.java
package com.firebase.utils;

import java.util.Date;

/**
 * Fancy ID generator that creates 20-character string identifiers with the
 * following properties:
 *
 * 1. They're based on timestamp so that they sort *after* any existing ids.
 * 2. They contain 72-bits of random data after the timestamp so that IDs won't
	package com.firebase.utils;

	import java.util.Date;

	/**
	* Fancy ID generator that creates 20-character string identifiers with the
	* following properties:
	*
	* 1. They're based on timestamp so that they sort after any existing ids.
	* 2. They contain 72-bits of random data after the timestamp so that IDs won't