Merge pull request #35 from nongxiaoming/master

examples:add the ape media play example.
drivers:fix the sdcard driver data align error.
realboard:update the linker script file for mdk.
6_media_ape:update the mdk project template and linker script file.
6_media_ape:update to use dynamic memory.
6_media_ape:add the new linker file.
6_media_mp3:update the mdk project template and linker file.
6_media_wav:update the mdk project template and linker file.
Merge remote-tracking branch 'remotes/remote/master'