[Mercurial][Firefox OS] Repo init with README

[Mozilla commitid]

# HG changeset patch
# User Stas Malolepszy <st...@mozilla.com>
# Date 1349106898 -7200
# Node ID cae744abe7cf156aa3f8131f81f49263ba09f4fb

Repo init with README

diff --git a/README.txt b/README.txt
new file mode 100644
--- /dev/null
+++ b/README.txt
@@ -0,0 +1,2 @@
+This directory contains the et locale for Firefox OS.
+For English files, see https://hg.mozilla.org/gaia-l10n/en-US/