remove sed, pkgconfig deps

Signed-off-by: Lan Yixun (dlan) <dennis.yxun@gmail.com>
fix version number, probably a rush release

Signed-off-by: Lan Yixun (dlan) <dennis.yxun@gmail.com>
explictly require DirectFB enable dynamic load feature (dynload)

otherwise, DirectFB complain of no moudle found

(*) DirectFB/Core: Single Application Core. (2013-02-19 16:09)
(!) DirectFB/core/system: No system found!
(#) DirectFBError [DirectFBCreate() failed]: No (suitable)
 implementation found!

Signed-off-by: Lan Yixun (dlan) <dennis.yxun@gmail.com>
add info to notify user how to customize keyboard mapping

Signed-off-by: Lan Yixun (dlan) <dennis.yxun@gmail.com>