Update vim-colors-solarized/README.mkd

Swap Xdefaults for Xresources. (Xdefaults is deprecated.)

vim-colors-solarized/README.mkd

@@ -107,7 +107,7 @@ select either the light or dark background.
 If you are going to use Solarized in Terminal mode (i.e. not in a GUI version 
 like gvim or macvim), **please please please** consider setting your terminal 
 emulator's colorscheme to use the Solarized palette. I've included palettes 
-for some popular terminal emulator as well as Xdefaults in the official 
+for some popular terminal emulator as well as Xresources in the official 
 Solarized download available from [Solarized homepage]. If you use 
 Solarized *without* these colors, Solarized will need to be told to degrade its
 colorscheme to a set compatible with the limited 256 terminal palette (whereas 
@@ -153,7 +153,7 @@ Set these in your vimrc file prior to calling the colorscheme.
     the standard 16 colors of your terminal emulator. You will need to set 
     those colors to the correct Solarized values either manually or by 
     importing one of the many colorscheme available for popular terminal 
-    emulators and Xdefaults.
+    emulators and Xresources.
 
 *   g:solarized_termtrans