Add CONTRIBUTORS.md

Author: alfinkel

CONTRIBUTORS.md

@@ -0,0 +1,22 @@
+# Pre-OSS Contributors
+
+The following IBMers have all contributed to this code base:
+
+- Cleto Martin
+- Al Finkelstein
+- Harshdeep Harshdeep
+- Matt White
+- Simon Metson
+- Doug Chivers
+- Ignacio Diez
+- Timothy Kelsey
+- Zhong Shi Wang
+- Gino Cubeddu
+- Sef Mutari
+- Huan Wu
+- Emre Yildirim
+- Jagdish Kumar
+- Louis R Degenaro
+- Oliver Koeth
+- Vasileios Gkoumplias
+- Andrew Toolan