Added Imperial contributors, which includes Donaldson, Evrard and Thomson due to their pre-Google contributions. (#40)

afd · hevrard · commit 86af3306f967 · 2018-10-05T09:16:52.000+01:00
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
@@ -7,3 +7,11 @@ Google LLC
  Alastair Donaldson
  Hugues Evrard
  Paul Thomson
+
+Imperial College London
+ Daniel Dean
+ Alastair Donaldson
+ Hugues Evrard
+ Andrei Lascu
+ David MacIver
+ Paul Thomson
