change the way we install nginx - Travis CI package version too old

Author: mitchellkrogza

.travis.yml

@@ -18,12 +18,12 @@ cache:
 addons:
   apt:
     packages:
-      - nginx-full
+      #- nginx-full
       - realpath
-#install:
-  #- sudo add-apt-repository -y ppa:nginx/stable
-  #- sudo apt-get update
-  #- sudo apt-get install -y --force-yes nginx-extras
+install:
+  - sudo add-apt-repository -y ppa:nginx/stable
+  - sudo apt-get update
+  - sudo apt-get install -y --force-yes nginx-extras
   #- travis-ci/install-nginx2.sh
 script:
   #- sudo nginx -t &> /dev/stdout