Test against Nginx 1.11 mainline

.travis.yml

@@ -4,8 +4,13 @@ compilers:
   - gcc
 env:
   # Don't use `NGINX` as the variable name or Nginx won't daemonise
+  # Mainline
+  - SHIB_NGINX_VERSION=1.11.0 SHIB_DYNAMIC_MODULE=true
+  - SHIB_NGINX_VERSION=1.11.0 SHIB_DYNAMIC_MODULE=false
+  # Stable
   - SHIB_NGINX_VERSION=1.10.0 SHIB_DYNAMIC_MODULE=true
   - SHIB_NGINX_VERSION=1.10.0 SHIB_DYNAMIC_MODULE=false
+  # Previous stable
   - SHIB_NGINX_VERSION=1.8.1 SHIB_DYNAMIC_MODULE=false
 sudo: false
 addons: