Document TSC

Signed-off-by: Alex Sergeev <alsrgv@users.noreply.github.com>

CONTRIBUTING.md

@@ -7,3 +7,20 @@ Refer to the following guidelines to contribute new functionality or bug fixes t
 2. Use [clang-format](https://clang.llvm.org/docs/ClangFormat.html) to format C++ code.
 3. Add unit tests for any new code you write.
 4. Run unit tests in both CPU and GPU environments.
+
+### Charter
+
+You can find Horovod Charter [here](https://wiki.lfai.foundation/download/attachments/7733301/Horovod%20Project%20Technical%20Charter%2012-22-2018%20FINAL.pdf?version=1&modificationDate=1558389484000&api=v2)
+
+### Technical Steering Committee
+
+Horovod development is governed by Horovod Technical Steering Committee (TSC).
+
+Current voting members of the Horovod TSC:
+* Alex Sergeev (@alsrgv)
+* Travis Addair (@tgaddair)
+* Can Karakus (@karakusc)
+
+Horovod TSC publishes meeting notes via [mailing list](https://lists.lfai.foundation/g/horovod-tsc).
+This mailing list can also be utilized to reach out to the TSC.
+