add rofi-theme-selector manpage and mention it in rofi manpage

doc/rofi-theme-selector.1.md

@@ -0,0 +1,39 @@
+# rofi-theme-selector 1 rofi-theme-selector
+
+## NAME
+
+**rofi-theme-selector** - Preview and apply themes for **rofi**
+
+## DESCRIPTION
+
+**rofi-theme-selector** is a bash/rofi script to preview and apply themes for **rofi**.
+It's part of any installation of **rofi**.
+
+## USAGE
+
+### Running rofi-theme-selector
+
+**rofi-theme-selector** shows a list of all available themes in a **rofi** window.
+It lets you preview each theme with the Enter key and apply the theme to your
+**rofi** configuration file with Alt+a.
+
+
+## Theme directories
+
+**rofi-theme-selector** searches the following directories for themes:
+
+* ${PREFIX}/share/rofi/themes
+* $XDG_CONFIG_HOME/rofi
+* $XDG_DATA_HOME/share/rofi/themes
+
+${PREFIX} reflects the install location of rofi. In most cases this will be "/usr".
+$XDG_CONFIG_HOME is normally unset. Default path is "$HOME/.config".
+$XDG_DATA_HOME is normally unset. Default path is "$HOME/.local/share".
+
+SEE ALSO
+       rofi(1)
+
+AUTHOR
+       Qball Cow qball@gmpclient.org
+
+       Rasmus Steinke rasi@xssn.at

doc/rofi.1.markdown

@@ -957,7 +957,7 @@ first.
 
 ## SEE ALSO
 
-rofi-sensible-terminal(1), dmenu(1), rofi-theme(5)
+rofi-sensible-terminal(1), dmenu(1), rofi-theme(5), rofi-theme-selector(1)
 
 ## AUTHOR