Add note to TRANSLATORS regarding Transifex

Signed-off-by: Dan McGee <dan@archlinux.org>

TRANSLATORS

@@ -1,14 +1,13 @@
-Thanks to all of those who have helped translate pacman, both in the past
-and currently. Here are some of the current translators (past translators
-can be found by looking in the GIT history).
+Thanks to all of those who have helped translate pacman, both in the past and
+currently. Our translations are currently maintained in Transifex; please read
+doc/translation-help.txt for more details.
 
-If your language is listed here and you are interested in helping translate,
-contact either the pacman mailing list at pacman-dev@archlinux.org, or one
-of the translators listed above.
+Below is a list of past translators before we switched to Transifex; more can
+be found by looking in the GIT history.
 
-If your language is not listed here and you wish it was, let the pacman mailing
-list know you are interested in making a translation. We will be happy to add
-your language to the mix.
+If your language is not already in the various po/ subdirectories and you wish
+it was, set up a team in Transifex for your language and we will be happy to
+add your language to the mix.
 
 Catalan (ca):
 	Manuel Tortosa <manutortosa@chakra-project.org>