update esater egg

Author: michaelb

plugin/tips/eastereggs.txt

@@ -5,3 +5,4 @@
 :help UserGettingBored      :Easter Egg
 :help showmatches     :Easter Egg
 :Ni!     :Easter Egg
+:smile     :Easter Egg

plugin/vim-tips.vim

@@ -51,7 +51,7 @@ endfunction
 
 
 function GetEasterEgg()
-  let s:tiplist = [ ":help 42     : Easter Egg", ":help holy-grail      :Easter Egg",":help!      :Easter Egg",":help map-modes      :Easter Egg",":help UserGettingBored      :Easter Egg",":help showmatches     :Easter Egg",":Ni!     :Easter E",]
+  let s:tiplist = [ ":help 42     : Easter Egg", ":help holy-grail      :Easter Egg",":help!      :Easter Egg",":help map-modes      :Easter Egg",":help UserGettingBored      :Easter Egg",":help showmatches     :Easter Egg",":Ni!     :Easter E",":smile      :Easter Egg",]
   let s:index = Rand() % len(s:tiplist)
   return s:tiplist[s:index]
 endfunction