migrate to new travis format (#40)

Author: lloydbenson

.travis.yml

@@ -1,16 +1,7 @@
-language: node_js
+version: ~> 1.0
 
-node_js:
-  - "12"
-  - "14"
-  - "node"
 
-sudo: false
-
-install:
-  - "npm install"
-
-os:
-  - "linux"
-  - "osx"
-  - "windows"
+import:
+  - hapijs/ci-config-travis:node_js.yml@main
+  - hapijs/ci-config-travis:install.yml@main
+  - hapijs/ci-config-travis:os.yml@main