feat: add CUID version 2 (#3)

Resolves: #2
Closes: #3
Signed-off-by: Thibault Meyer <meyer.thibault@gmail.com>

Author: thibaultmeyer

README.md

@@ -31,10 +31,15 @@ To speed up process, you can ignore unit tests by using: `-DskipTests=true -Dmav
 ```
 
 ```java
-final CUID cuid = CUID.randomCUID();
+final CUID cuid = CUID.randomCUID1();
 System.out.println("CUID: " + cuid);
 ```
 
+```java
+final CUID cuid = CUID.randomCUID2();
+System.out.println("CUID (Version 2): " + cuid);
+```
+
 ```java
 final CUID cuid = CUID.fromString("cl9gts1kw00393647w1z4v2tc");
 System.out.println("CUID: " + cuid);