[nongnu] elpa/rust-mode updated (3e388ed -> 6e10044)

[ELPA Syncer]

elpasync pushed a change to branch elpa/rust-mode.

      from  3e388ed   include keyword existential in rust-keywords
       new  405ac98   update readme
       new  6e10044   update readme


Summary of changes:
 README.md | 80 +++++++++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 57 insertions(+), 23 deletions(-)