Moves to the new Travis CI infrastructure.

Enable 'ccache' for caching 'gcc'.

Author: arteymix

.travis.yml

@@ -3,12 +3,23 @@ language: c
 compiler:
     - gcc
 
-before_install:
-    - sudo add-apt-repository --yes ppa:vala-team
-    - sudo apt-get update --quiet
-    - sudo apt-get install --yes --force-yes valac libglib2.0-bin libglib2.0-dev
-      libsoup2.4-dev libfcgi-dev python-pip valadoc
-    - sudo pip install cpp-coveralls sphinx PyYAML
+cache: ccache
+
+addons:
+    apt:
+        sources:
+            - vala-team
+        packages:
+            - valac
+            - libglib2.0-bin
+            - libglib2.0-dev
+            - libsoup2.4-dev
+            - libfcgi-dev
+            - python-pip
+            - valadoc
+
+install:
+    - pip install --user cpp-coveralls sphinx PyYAML
 
 before_script:
     - ./waf configure --enable-gcov