Apply code style, fix node versions in TravisCI setup

.travis.yml

@@ -1,8 +1,9 @@
 sudo: false
 language: "node_js"
-node_js:
-  - "4.2"
-  - "5.0"
+node_js: 
+  - "4"
+  - "6"
+  - "7"
 script:
   - npm install istanbul
   - istanbul cover ./node_modules/.bin/_mocha --report lcovonly

lib/git.js

@@ -41,7 +41,7 @@ function Git (dir) {
     'LANG': 'en_US'
   }, process.env)
 
-  var gitcmd = module.exports.mockCmd ? [ 'node', module.exports.mockCmd ] : 'git'
+  var gitcmd = module.exports.mockCmd ? ['node', module.exports.mockCmd] : 'git'
 
   /**
    * Execute git with a list of cmd-line arguments in the working directory
@@ -60,7 +60,7 @@ function Git (dir) {
    * Spawn git, keeping stdio connected to the parents stdio. The is needed for commands
    * that need a tty to work
    * @returns {*}
-     */
+   */
   this.spawn = function spawnGit () {
     debug(`Running in ${dir}`, gitcmd, _.toArray(arguments))
     return cpp.spawn(gitcmd, _.toArray(arguments), {env: env, cwd: dir, stdio: 'inherit'})
@@ -188,8 +188,8 @@ function Git (dir) {
     var targetBranch = (options && options.targetBranch) || 'master'
     var thoughtful = process.argv[1]
     /* istanbul ignore else
-	   The default value for "thoughtful" is the current process. It
-       is hardly possible to use this default value in a unit-test */
+     The default value for "thoughtful" is the current process. It
+     is hardly possible to use this default value in a unit-test */
     if (options && options.thoughtful) {
       thoughtful = options.thoughtful
     }

package.json

@@ -22,10 +22,10 @@
   "preferGlobal": true,
   "license": "MIT",
   "scripts": {
-    "pretest": "standard --version || npm -g install standard@5",
+    "pretest": "standard --version || npm -g install standard",
     "test": "mocha && standard",
-    "preformat": "standard --version || npm -g install standard@5",
-    "format": "standard --format",
+    "preformat": "standard --version || npm -g install standard",
+    "format": "standard --fix",
     "thought": "thought run -a",
     "prethoughtcheck": "thought --version || npm -g install thought",
     "thoughtcheck": "thought check-engines",