fix(grammar): isOpen --> openInBrowser

Author: jrappen

lib/commands/serve.js

@@ -9,7 +9,7 @@ const util = require('../util/index')
 var exists = util.exists
 var resolve = util.resolve
 
-module.exports = function (path, isOpen, port) {
+module.exports = function (path, openInBrowser, port) {
   path = resolve(path || '.')
   var indexFile = resolve(path, 'index.html')
 
@@ -28,7 +28,7 @@ module.exports = function (path, isOpen, port) {
     exts: ['md']
   }).watch(path)
 
-  if (isOpen) {
+  if (openInBrowser) {
     open(`http://localhost:${port}`)
   }