Updating devin's and dave's emails.

--HG--
branch : yt-3.0

CREDITS

@@ -5,7 +5,7 @@ Contributors:
                 Gabriel Altay ([email protected])
                 Kenza Arraki ([email protected])
                 Alex Bogert ([email protected])
-                David Collins ([email protected])
+                David Collins ([email protected])
                 Brian Crosby ([email protected])
                 Andrew Cunningham ([email protected])
                 Miguel de Val-Borro ([email protected])
@@ -43,7 +43,7 @@ Contributors:
                 Anthony Scopatz ([email protected])
                 Noel Scudder ([email protected])
                 Pat Shriwise ([email protected])
-                Devin Silvia (devin.silvia@colorado.edu)
+                Devin Silvia (devin.silvia@gmail.com)
                 Sam Skillman ([email protected])
                 Stephen Skory ([email protected])
                 Britton Smith ([email protected])