Use newer compiler on Travis

Author: hampelm

.travis.yml

@@ -1,19 +1,31 @@
 language: node_js
 node_js:
-  - "0.10"
+  - "4"
+compiler: clang-3.6
 services:
   - mongodb
   - redis-server
 addons:
+  apt:
+    sources:
+      - llvm-toolchain-precise-3.6
+      - ubuntu-toolchain-r-test
+    packages:
+      - clang-3.6
+      - g++-4.8
   postgresql: "9.3"
+sudo: true
+
 before_script:
   - openssl req -x509 -nodes -days 730 -newkey rsa:1024 -subj "/C=US/ST=MI/L=Detroit/O=Dis/CN=www.example.com" -keyout test/data/test-key.pem -out test/data/test-cert.pem
   - psql -U postgres -c "create extension postgis"
   - psql -c 'create database travis_ci_test;' -U postgres
   - psql -d travis_ci_test -a -f test/data/features-db.sql
   - psql -d travis_ci_test -a -f test/data/schema.sql
+
 env:
   global:
+    - CXX=clang-3.6
     - secure: "TFbmH2rbf/t/1nMkpS09QcVWbI5AdWqQSDRmuwhIent88AxfdlY4mgtviDdtDZYDN4l/zwBf442ocmiImrCi7ZJsvLBpPtqHs0mDGzOCilVPxIM71Si3BSY3QWjPTG1WSSEHpsFUXz8pWr2hlAGFi6maUEo/KcDHf8xrcJuZHq8="
     - secure: "AV7+wVMYrm4f6vu5NmFts8tARo7eDFDI8E3Rwb2swIlLJnAlc/YUcxZ7Mbiav+Ops7zcWNwgl5oYlNXwPj+AVdrQ9WnxVE+FgKDzkTC/4EDl2h/tqVEOkwVJ4D5EFt5NsF47GvnuTo3v7dTfpXUwXLPqIfgYDQIs3hx43f/kHFM="
     - secure: "ETzchDuzsHT1PTpWdFJjlz/xydsZQkFPVcY6vcL62T6VZXSxZ2Ev15RBzpl5dM1Kr/8VlLH8MZiW33uXrnryAjtgsVDZmbF2ZarpRxk8bKTLf4UuqYh0aqnmzMivkGkMijgCVM82UgjNUYD0L/+B0Y+mEmXKiCHqBDLXw3oB5uQ="
@@ -33,4 +45,3 @@ env:
     - TILESERVER_BASE=http://example.com
     - TEST_SECURE_PORT=8888
     - REDIS_URL=http://localhost:6379
-sudo: false