add underlay files for listdirectives

As was noted, 'listdirectives' didn't include the underlay files that make
it really worthwhile.  I've just gone through all the plugin
documentation, modified it to remove installation information and renamed
the files to match the directives rather than the plugins.  This can now
serve as useful underlay.

I've only gone through plugins in the 'plugins' dir.  I did not go through
the 'contrib' dir.

1 files changed, 23 insertions, 0 deletions

diff --git a/underlays/basewiki/directive/color.mdwn b/underlays/basewiki/directive/color.mdwn
new file mode 100644
index 000000000..cdb9b6c1d
--- /dev/null
+++ b/underlays/basewiki/directive/color.mdwn
@@ -0,0 +1,23 @@
+The `color` directive is supplied by the [[!iki plugins/color]] plugin.
+
+This directive can be used to color a piece of text on a page.
+It can be used to set the foreground and/or background color of the text.
+
+You can use a color name (e.g. `white`) or HTML code (e.g. `#ffffff`)
+to define colors. 
+
+## examples
+
+Here the foreground color is defined as a word, while the background color
+is defined as a HTML color code:
+
+	\[[!color foreground=white background=#ff0000 text="White text on red background"]]
+
+The background color is missing, so the text is displayed on default
+background:
+
+	\[[!color foreground=white text="White text on default color background"]]
+
+The foreground is missing, so the text has the default foreground color:
+
+	\[[!color background=#ff0000 text="Default color text on red background"]]