Add fts search engines, add more rest doc.

Expand *simple to use* to mention REST and XMLRPC along with html for
web use.

Mention REST can be extended. Also JWT is possible. CORS support as well.

Author: rouilj

doc/features.txt

@@ -24,7 +24,8 @@ from Ka-Ping Yee in the :index:`Software Carpentry` "Track" design competition.
    mysql_ and postgresql_
 
 *simple to use*
- - accessible through the web, email, command-line or Python programs
+ - accessible through the web (html, REST or XMLRPC), email,
+   command-line or Python programs
  - may be used to track bugs, features, user feedback, sales opportunities,
    milestones, ...
  - automatically keeps a full history of changes to issues with
@@ -53,7 +54,8 @@ from Ka-Ping Yee in the :index:`Software Carpentry` "Track" design competition.
    support them (sqlite, mysql and postgresql)
  - indexed text searching giving fast responses to searches across all
    messages and indexed string properties
- - support for the Xapian or Whoosh full-text indexing engine for large trackers
+ - support for the Xapian, Whoosh. sqlite or postgres full-text
+   indexing engines for large trackers
 
 *documented*
  - documentation exists for installation, upgrading, maintenance, users and
@@ -115,8 +117,11 @@ from Ka-Ping Yee in the :index:`Software Carpentry` "Track" design competition.
    XMLRPC calls
  - see the `xmlrpc guide`_ for more details simple clients etc.
 
-*restful interface*
+*RESTful interface*
  - accessible using basic HTTP authentication at /rest starting point
+ - able to be extended with new endpoints
+ - authentication can be done using JSON Web Tokens (JWT)
+ - CORS support for use by third party web pages.
  - see the `rest guide`_ for details.
 
 .. _sqlite: http://www.hwaci.com/sw/sqlite/