Enable colored Luacheck output on Travis CI

This also removes the deprecated `sudo: false` option, as Travis CI
is phasing out the container-based infrastructure.

diff --git a/.travis.yml b/.travis.yml
index 5253938abf154e716b0ab1c8d5041530b9d80295..a367215f7515754c4b350b365182d3dba9d2371e 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,11 @@
 language: generic
-sudo: false
 addons:
   apt:
     packages:
     - luarocks
 before_install:
   - luarocks install --local luacheck
-script: 
-- $HOME/.luarocks/bin/luacheck --no-color ./mods
+script:
+- $HOME/.luarocks/bin/luacheck ./mods
 notifications:
   email: false