Add hiatus note & link to issue

pjohnmeyer · web-flow · commit 37df68be21fd · 2020-08-17T19:53:58.000-05:00
diff --git a/README.md b/README.md
@@ -1,3 +1,6 @@
+>  ### Maintenance of UnitTest++, recently sporadic, is officially on hiatus until 1 October 2020. Subscribe to https://github.com/unittest-cpp/unittest-cpp/issues/180 for updates.
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 [![Build Status](https://travis-ci.org/unittest-cpp/unittest-cpp.svg?branch=master)](https://travis-ci.org/unittest-cpp/unittest-cpp)
 [![Build status](https://ci.appveyor.com/api/projects/status/ffs2k8dddts5cyok/branch/master?svg=true)](https://ci.appveyor.com/project/pjohnmeyer/unittest-cpp/branch/master)
 
