No Settings, no hassle. Clean and short. Activate it and you will get pretty, handy Rich Text Editor on all Taxonomy pages, including Tags, Categories and any other taxonomies you will ever create in future.

To display the rich category description use term_description().

Supports Shortcodes and oEmbeds.

1.0

• Initial release.

1.1

• Fix undefined notices.
• Truncate description on listing pages.
• Process shortcodes.

1.2

• Support oEmbed.

1.2.1

• Avoid ugly overflow bug of toolbar and status bar on small screens.
• Properly check for unfiltered_html capability.

1.2.2

• Fix more undefined notices.
• Insert rich editors on after_setup_theme, instead of on init.

1.2.3

• Insert rich editors on after_setup_theme, instead of on wp_loaded (as late as possible).

1.2.4

• Fix description not saving on the taxonomy list page.

1. Go to: Plugins > Add New > upload
2. Browse for rich-tax-description-editor-x.x.x.zip file
3. Hit Install Now
4. Activate

or

1. Upload contents of rich-tax-description-editor-x.x.x.zip to /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress