Update credits

src/MacVim/Credits.rtf

@@ -34,6 +34,8 @@ Jonathon Mah\
 \pard\pardeftab720\ql\qnatural
 \cf0 Kazuki Sakamoto\
 Vincent Berthoux\
+Nikola Kne\'9eevi\uc0\u263 \
+Dmitry Vazhov\
 \pard\tx566\tx1133\tx1700\tx2267\tx2834\tx3401\tx3968\tx4535\tx5102\tx5669\tx6236\tx6803\ql\qnatural\pardirnatural
 
 \i0 \cf0 \
@@ -44,6 +46,8 @@ Thank you to {\field{\*\fldinst{HYPERLINK "http://www.positivespinmedia.com"}}{\
 \
 Toolbar icons by {\field{\*\fldinst{HYPERLINK "http://www.mattballdesign.com/"}}{\fldrslt Matt Ball}} (free Developer Icons), {\field{\*\fldinst{HYPERLINK "http://www.jonasraskdesign.com/"}}{\fldrslt Jonas Rask}} (Danish Royalty Free icon set), and {\field{\*\fldinst{HYPERLINK "http://www.everaldo.com"}}{\fldrslt Everaldo Coelho}} (Crystal Project Icons, released under LGPL license).\
 \
+Revamped MacVim icon by RIC.\
+\
 Thanks to Andy Matuschak for {\field{\*\fldinst{HYPERLINK "http://sparkle.andymatuschak.org/"}}{\fldrslt Sparkle}}.\
 \
 Thanks to Damien Guard for {\field{\*\fldinst{HYPERLINK "http://damieng.com/blog/2008/05/26/envy-code-r-preview-7-coding-font-released"}}{\fldrslt Envy Code R}} (used in MacVim's 16x16 document icons).}