add another activated app

tool/travis.sh

diff --git a/tool/travis.sh b/tool/travis.sh
index 56bc6e2..02f2d88 100755
--- a/tool/travis.sh
+++ b/tool/travis.sh
@@ -8,6 +8,7 @@
 set -e
 
 # Activate some packages for use while running tests.
+pub global activate tuneup
 pub global activate path 1.3.0
 pub global activate path
 pub global activate --source git https://github.com/dart-lang/test.git