Merge pull request #597 from LocutusOfBorg/patch-1

Delete Ubuntu Vivid, EOL

docs/installation.rst

@@ -38,7 +38,6 @@ NetBSD       `pkgsrc`_                                     ``pkg_add py-borgback
 NixOS        `.nix file`_                                  N/A
 OS X         `Brew cask`_                                  ``brew cask install borgbackup``
 Ubuntu       `Xenial 16.04`_, `Wily 15.10 (backport PPA)`_ ``apt install borgbackup``
-Ubuntu       `Vivid 15.04 (backport PPA)`_                 ``apt install borgbackup``
 Ubuntu       `Trusty 14.04 (backport PPA)`_                ``apt install borgbackup``
 ============ ============================================= =======
 
@@ -48,7 +47,6 @@ Ubuntu       `Trusty 14.04 (backport PPA)`_                ``apt install borgbac
 .. _pkgsrc: http://pkgsrc.se/sysutils/py-borgbackup
 .. _Xenial 16.04: https://launchpad.net/ubuntu/xenial/+source/borgbackup
 .. _Wily 15.10 (backport PPA): https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/borgbackup
-.. _Vivid 15.04 (backport PPA): https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/borgbackup
 .. _Trusty 14.04 (backport PPA): https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/borgbackup
 .. _.nix file: https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/backup/borg/default.nix
 .. _Brew cask: http://caskroom.io/