Added release notes for 2.7.2.

Author: rstam

Release Notes/Release Notes v2.7.1.md

@@ -17,3 +17,12 @@ http://mongodb.github.io/mongo-csharp-driver/
 Upgrading
 
 There are no known backwards breaking changes in this release.
+
+Important compatibility note:
+
+If your application is running on Linux or OS X and you were planning to upgrade
+to the 2.7.1 release of the driver, you must upgrade to 2.7.2 or later rather than 2.7.1.
+
+See the 2.7.2 release notes for details:
+
+https://github.com/mongodb/mongo-csharp-driver/blob/v2.7.x/Release%20Notes/Release%20Notes%20v2.7.2.md

Release Notes/Release Notes v2.7.2.md

@@ -0,0 +1,28 @@
+# .NET Driver Version 2.7.2 Release Notes
+
+This is a patch release that fixes one bug reported since 2.7.1 was released.
+
+An online version of these release notes is available at:
+
+https://github.com/mongodb/mongo-csharp-driver/blob/v2.7.x/Release%20Notes/Release%20Notes%20v2.7.2.md
+
+The full list of JIRA issues resolved in this release is available at:
+
+https://jira.mongodb.org/issues/?jql=project%20%3D%20CSHARP%20AND%20fixVersion%20%3D%202.7.2%20ORDER%20BY%20key%20ASC
+
+Documentation on the .NET driver can be found at:
+
+http://mongodb.github.io/mongo-csharp-driver/
+
+Upgrading
+
+There are no known backwards breaking changes in this release.
+
+If your application is running on Linux or OS X and you were planning to upgrade
+to the 2.7.1 release of the driver, you must upgrade to 2.7.2 or later rather than 2.7.1.
+
+In the 2.7.1 release, the driver enables TCP KeepAlive and configures the
+KeepAlive interval, but the method that it uses throws a PlatformNotSupportedException
+on Linux and OS X. In the 2.7.2 release the driver catches that exception rather than
+failing to connect, and falls back to simply enabling KeepAlive. If that also throws a
+PlatformNotSupportedException, it will connect without enabling KeepAlive.