Add more people who wrote patches to the acknowledgments

The names came from grepping ChangeLog for 'patch/code from/by'.

README

@@ -75,6 +75,7 @@ fixing bugs:
   Weston Andros Adamson
   William Ahern
   Stas Bekman
+  Ka-Hing Cheung
   Andrew Danforth
   Christopher Davis
   Mike Davis
@@ -82,22 +83,39 @@ fixing bugs:
   Alexander von Gernler
   Artur Grabowski
   Aaron Hopkins
+  Tani Hosokawa
   Claudio Jeker
+  Valery Kyholodov
+  Marko Kreen
   Scott Lamb
   Adam Langley
+  Christopher Layne
   Philip Lewis
   David Libenzi
+  Moshe Litvin
+  Hagne Mahre
+  Lubomir Marinov
   Nick Mathewson
+  James Mansion
   Andrey Matveev
+  Caitlin Mercer
+  Trond Norbye
   Richard Nyberg
   Jon Oberheide
   Phil Oleson
   Dave Pacheco
   Tassilo von Parseval
   Pierre Phaneuf
+  Ryan Phillips
   Jon Poland
   Bert JW Regeer
+  Hanna Schroeter
+  Kevin Springborn
+  Ferenc Szalai
   Dug Song
+  Zack Weinberg
   Taral
+  propanbutan
+  mmadia
 
-If I have forgotten your name, please contact me.
+If we have forgotten your name, please contact us.