[elpa] externals/emms updated (a04d31d -> 1cbc3af)

[ELPA Syncer]

elpasync pushed a change to branch externals/emms.

      from  a04d31d   * emms-volume-sndioctl.el: add missing require
       new  cdea65b   * AUTHORS: add Omar Polo
       new  1cbc3af   * doc/developer-release.txt: add note about AUTHORS.


Summary of changes:
 AUTHORS                   | 1 +
 doc/developer-release.txt | 2 ++
 2 files changed, 3 insertions(+)