Added mlflow charter to the contribution.rst (mlflow#3066)

Signed-off-by: Jules Damji <[email protected]>

Author: dmatrix

CONTRIBUTING.rst

@@ -7,6 +7,19 @@ contributing to MLflow.
   :local:
   :depth: 3
 
+Governance
+##########
+
+Governance of MLflow is conducted by the Technical Steering Committee (TSC), which currently includes the following members:
+
+ - Patrick Wendell ([email protected])
+
+ - Reynold Xin ([email protected])
+
+ - Matei Zaharia ([email protected])
+
+The founding technical charter can be found `here <https://github.com/mlflow/mlflow/blob/master/mlflow-charter.pdf>`_.
+
 Contribution process
 ####################
 The MLflow contribution process starts with filing a GitHub issue. MLflow defines four