Updated the theme-development documentation to include the theme-display page.
Updated the theme-development documentation to include the theme-display page.

jtakayama/makahiki-draft,jtakayama/ics691-setupbooster,jtakayama/makahiki-draft,jtakayama/ics691-setupbooster,justinslee/Wai-Not-Makahiki,jtakayama/ics691-setupbooster,jtakayama/makahiki-draft,yongwen/makahiki,csdl/makahiki,yongwen/makahiki,csdl/makahiki,yongwen/makahiki,csdl/makahiki,jtakayama/makahiki-draft,csdl/makahiki,yongwen/makahiki