Update packages/yasnippet by subtree-merging from its external upstream

[gnu-emacs-elpa] / packages / yasnippet / doc / doc / snippet-expansion.org

diff --git a/doc/snippet-expansion.org b/packages/yasnippet/doc/doc/snippet-expansion.org
similarity index 100%
rename from doc/snippet-expansion.org
rename to packages/yasnippet/doc/doc/snippet-expansion.org