Add @welford's signature to CLA

licenses/cla-individual.md

@@ -148,3 +148,5 @@ Harald Albrecht, @TheDiveO, 2014/03/12
 Maurizio Pollio, @mpollio, 2014/03/21
 
 Michael Fogleman, @mwfogleman, 2014/04/08
+
+James W. Anderson, @welford, 2014/04/08