README.md in assert_dirs_equal-0.1.0 vs README.md in assert_dirs_equal-0.1.1

@@ -10,11 +10,11 @@
 
 Production ready.
 
 ## Documentation
 
-[Released version](http://rubydoc.info/gems/assert_dirs_equal/0.1.0)
+[Released version](http://rubydoc.info/gems/assert_dirs_equal/0.1.1)
 
 ## Why
 
 Sometimes it is easier to commit expected directory structure and compare it with a directory
 created by a method under test.
@@ -55,9 +55,15 @@
 ```
 
 ### RSpec
 
 TODO
+
+## Known issues
+
+Due that Rubinius String#strip doesn't fail on binary data (undocumented behaviour), the library will
+try to actually diff binary files. Depending on your test framework's diffing tool, it may or may not
+be a problem. For example, Minitest is not affected, since it uses shell `diff` under the hood.
 
 ## Origin
 
 Extracted from [Torba][torba-github] library since it looks more like a standalone component.