[fix] TimeUnit formatting for large numbers.
Merge branch 'master' of https://github.com/danielferber/slf4j-toys.git

Conflicts:
	slf4j-toys/src/main/java/br/com/danielferber/slf4jtoys/slf4j/utils/UnitFormatter.java
	slf4j-toys/src/test/java/br/com/danielferber/slf4jtoys/slf4j/utils/TimeFormatterTest.java