Don't Throw Error when setting unittest config twice

pkg/unittest/CHANGELOG.md

Index: pkg/unittest/CHANGELOG.md
===================================================================
--- pkg/unittest/CHANGELOG.md	(revision 42037)
+++ pkg/unittest/CHANGELOG.md	(working copy)
@@ -1,3 +1,9 @@
+##0.11.2
+
+* Prints a warning instead of an throwing an Exception when setting a test

[kevmoo, 2014/12/08 21:04:44]

Instead: Prints a warning instead of throwing an error when setting the test
configuration after it has already been set. The first configuration is always
used.

[Nicolas Garnier, 2014/12/08 21:18:15]

Done. Should have re-read myself :D

+  configuration if one has already been set. The first configuration that has
+  been set wins.
+
 ##0.11.1+1
 
 * Fix bug in withTestEnvironment where test cases were not reinitialized if