Add missing license; mirage#33

Author: avsm

cohttp/accept.mli

@@ -1,3 +1,21 @@
+(*
+  Copyright (C) 2012, David Sheets <[email protected]>
+
+  Permission to use, copy, modify, and/or distribute this software for
+  any purpose with or without fee is hereby granted, provided that the
+  above copyright notice and this permission notice appear in all
+  copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+  WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+  WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+  AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+  DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
+  OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+  TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+  PERFORMANCE OF THIS SOFTWARE.
+*)
+
 type pv = Accept_types.pv = T of string | S of string
 type p = string * pv
 type media_range =