ci: add Windows to Travis CI (#248)

ci: add Windows to Travis CI

Author: ntwb

.travis.yml

@@ -1,12 +1,14 @@
-sudo: false
-
 git:
   depth: 1
 
 branches:
   only:
     - master
 
+os:
+  - linux
+  - windows
+
 language: node_js
 
 cache:
@@ -19,7 +21,7 @@ node_js:
   - '12'
 
 before_install:
-  - npm install -g npm@latest
+  - if [[ ("$TRAVIS_OS_NAME" == "linux") ]]; then npm install -g npm@latest; fi
 
 script: npm test
 

package.json

@@ -81,7 +81,10 @@
 		"root": true,
 		"extends": [
 			"plugin:@wordpress/eslint-plugin/recommended"
-		]
+		],
+		"rules": {
+			"linebreak-style": 0
+		}
 	},
 	"husky": {
 		"hooks": {