Updates travis.yml

Signed-off-by: CapXilinx <melik-merkumians@acin.tuwien.ac.at>

.travis.yml

@@ -1,7 +1,7 @@
 # This will run on Travis' 'new' container-based infrastructure
 sudo: false
 os: linux
-dist: precise
+dist: trusty
 
 language: c