Update release notes for v2.2.2rc2

Author: adobeDan

RELEASE_NOTES.md

@@ -4,7 +4,7 @@ These notes apply to v2.2.2rc2 of 2017-10-29.
 
 ## New Features
 
-None.
+[#294](https://github.com/adobe-apiplatform/user-sync.py/issues/294): Show statistics about users added to secondaries.
 
 ## Bug Fixes
 
@@ -22,6 +22,8 @@ There are no interface changes from prior versions.
 
 ## Known Issues
 
+The nosetests are broken in this release candidate.
+
 Because the release on Windows is built with a pre-compiled version of pyldap, we have to specify a specific version to be used in each release.  This may not always be the latest version.
 
 On the Win64 platform, there are very long pathnames embedded in the released build artifact `user-sync.pex`, which will cause problems unless you are on Windows 10 and are either running Python 3.6 or have enabled long pathnames system-wide (as described in this [Microsoft Dev Center article](https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx)).  To work around this issue on older platforms, set the `PEX_ROOT` environment variable (as described [in the docs here](https://adobe-apiplatform.github.io/user-sync.py/en/user-manual/setup_and_installation.html)) to be a very short path (e.g., `set PEX_ROOT=C:\pex`).