Fix travis build using jq from packages

.travis.yml

@@ -5,13 +5,8 @@ sudo: required
 dist: trusty
 
 install:
-    - git clone https://github.com/stedolan/jq.git
-    - pushd jq
-    - autoreconf -i
-    - ./configure --disable-maintainer-mode
-    - make
-    - sudo make install
-    - popd
+    - sudo apt-get update -qq
+    - sudo apt-get install -y -qq jq
 
 script:
     - cat */*/*.json | jq . 2&>/dev/null