issue 37: add test file.

This file can be checked with codevalidator (complains about
trailing white space, use of tabs, use of carriage return),
but with the current code it can't be fixed (will be overwritten
with an empty file).

#37

Author: Paŭlo Ebermann

test/unicode-test.yaml

@@ -0,0 +1,5 @@
+example: |
+      This line ends with a space. 
+      This line has a tab	in it.
+      This line ends with a carriage return.
+      This line has non-ASCII signs in it – which breaks codevalidator 0.8.2.