[beast] TRAVIS: add ubuntu trusty and xenial to the build matrix

[Tim Janik <timj src gnome org>]

commit 5708c08e56fae1f30e65cc309b366bd61f783ddd
Author: Tim Janik <timj gnu org>
Date:   Tue Mar 22 10:11:39 2016 +0100

    TRAVIS: add ubuntu trusty and xenial to the build matrix
    
    Signed-off-by: Tim Janik <timj gnu org>

 .travis.yml |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/.travis.yml b/.travis.yml
index 04c9ba2..d840880 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,9 @@ env:
     - bintray_url="https://dl.bintray.com/beast-team";
   matrix:
     - XFROM="debian:jessie" XUP="jessie"
+    - XFROM="ubuntu:trusty" XUP="trusty"
     - XFROM="ubuntu:wily"   XUP="wily"
+    - XFROM="ubuntu:xenial" XUP="xenial"
 
 before_install:
   - uname -a