chore(ci): update TravisCI configuration

Update the TravisCI configuration to match the current `atom/ci`
recommendation.

.travis.yml

@@ -23,8 +23,6 @@ after_success:
   - npm run travis-deploy-once "npm run semantic-release"
 
 ### Generic setup follows ###
-dist: trusty
-
 script:
   - curl -s -O https://raw.githubusercontent.com/atom/ci/master/build-package.sh
   - chmod u+x build-package.sh
@@ -45,10 +43,12 @@ git:
 
 sudo: false
 
+dist: trusty
+
 addons:
   apt:
     packages:
     - build-essential
-    - git
-    - libgnome-keyring-dev
     - fakeroot
+    - git
+    - libsecret-1-dev