Update index.md

Add in contributors to the spec over the last year. 

Signed-off-by: Kate Stewart <[email protected]>

Author: kestewart

docs/index.md

@@ -9,10 +9,12 @@ Copies of these licenses are reproduced in their entirety herein.
 
 With thanks to
 Adam Cohn,
+Adolfo García Veytia,
 Alan Tse,
 Alexios Zavras,
 Andrew Back,
 Ann Thornton,
+Arthit Suriyawongkul,
 Basil Peace,
 Bill Schineller,
 Bradlee Edmondson,
@@ -30,18 +32,21 @@ Eran Strod,
 Eric Thomas,
 Esteban Rockett,
 Gary O'Neall,
+Gopi Krishnan Rajbahadur,
 Guillaume Rousseau,
 Hassib Khanafer,
 Henk Birkholz,
 Hiroyuki Fukuchi,
 Jack Manbeck,
 Jaime Garcia,
+Jeff Liquia,
 Jeff Luszcz,
 Jeff Schutt,
 Jilayne Lovejoy,
 John Ellis,
 Jonas Oberg,
 Kamsang Salima,
+Karen Bennet,
 Karen Copenhaver,
 Kate Stewart,
 Kevin Mitchell,
@@ -61,6 +66,7 @@ Matt Germonprez,
 Maximilian Huber,
 Michael J. Herzog,
 Michel Ruffin,
+Nicole Pappler,
 Nisha Kumar,
 Norio Kobota,
 Nuno Brito,