adding a "random" theme.

themes/random/random.theme.bash

@@ -0,0 +1,7 @@
+# Random theme - a fake theme that randomly chooses one of the existing themes and loads it.
+# Yet another Oh-My-zsh feature
+
+# pick a theme:
+export BASH_IT_THEME=$( ls -w1 /home/cloudera/.bash_it/themes/  | grep -v .bash | grep -v random | sort -R | head -1 )
+# load it the right way:
+source "${BASH_IT}/lib/appearance.bash"