[togglz/togglz] bf3530: Added Log#warn()

[Christian Kaltepoth]

Branch: refs/heads/master
Home: https://github.com/togglz/togglz
Commit: bf3530094bcbdc05be389e25d55f43adc685e753
https://github.com/togglz/togglz/commit/bf3530094bcbdc05be389e25d55f43adc685e753
Author: Christian Kaltepoth <chri...@kaltepoth.de>
Date: 2016-03-03 (Thu, 03 Mar 2016)

Changed paths:
M core/src/main/java/org/togglz/core/logging/Jdk14LogProvider.java
M core/src/main/java/org/togglz/core/logging/Log.java
M slf4j/src/main/java/org/togglz/slf4j/Slf4jLogProvider.java

Log Message:
-----------
Added Log#warn()