docs: Prepare version 0.2.1 release notes

Change-Id: Ibde6faea916ca90f3c11b7d1189c7044ca9bc5ec
diff --git a/docs/RELEASE-NOTES.rst b/docs/RELEASE-NOTES.rst
index e0af4c5..f0f87dd 100644
--- a/docs/RELEASE-NOTES.rst
+++ b/docs/RELEASE-NOTES.rst
@@ -1,6 +1,27 @@
 Release Notes
 =============
 
+NLSR version 0.2.1 (changes since version 0.2.0)
+++++++++++++++++++++++++++++++++++++++++++++++++
+
+Release date: June 30, 2015
+
+**Code changes**:
+
+- Using a configuration file without ``prefix-update-validator`` disables runtime advertise/withdraw instead of exiting (:issue:`2814`)
+
+**Bug fixes**:
+
+- Prevent incomplete removal of NPT entry (:issue:`2785`)
+
+- Correct bidirectional links with differing costs (:issue:`2801`)
+
+- Fix non-incrementing Adjacency number in AdjLsa::writeLog (:issue:`2594`)
+
+- Remove FaceDestroyEvent test's reliance on nlsrSeqNo.txt (:issue:`2881`)
+
+- Test ACTIVE/INACTIVE Adjacencies in LSA construction (:issue:`2735`)
+
 NLSR version 0.2.0 (changes since version 0.1.0)
 ++++++++++++++++++++++++++++++++++++++++++++++++