Added previews, updated README with them

README.md

@@ -1,3 +1,19 @@
 # Mac-OS-X-Cheetah-dark
 
-Darkened and tuned version of Max OS X Cheetah theme  based on Azurra Framework Mac OS X.
+Darkened and tuned version of Max OS X Cheetah theme based on Azurra Framework Mac OS X.
+
+It includes GTK3, gtk2, xfwm4 and metacity themes. xfwm4 theme created from scratch. Despite lacking preview image, it should work for Mate too.
+
+It does **not** include Gnome Shell or Cinnamon theme.
+
+For KDE Plasma / Qt integration, I suggest using Kvantum with KvSimplicityDark theme. With time I could create a really matching one.
+
+Metacity theme copied from someone else's theme, but I can't remember which or whose, sorry about that.
+
+## Previews
+
+![Big preview with gtk3-widget-factory on page 1, plus a backdrop gedit and two xfwm4 decorated windows](preview/big.png)
+
+![gtk3-widget-factory on page 2](preview/gtk3-widget-factory-2)
+
+![xfwm4 window decoration example](preview/xfwm4.png)