warn for 50 < title <= 72 (#18)

* warn for 50 < title <= 72
* deps bump (tap 10.7 works better on Windows)

.travis.yml

@@ -1,4 +1,5 @@
 language: node_js
 node_js:
-  - "6"
+  - "8"
+  - "9"
 sudo: false

lib/format-pretty.js

@@ -77,7 +77,9 @@ function formatMessage(msg) {
   const m = msg.message
   const icon = msg.level === 'fail'
     ? utils.X
-    : utils.CHECK
+    : msg.level === 'warn'
+          ? utils.WARN
+          : utils.CHECK
   return `     ${icon}  ${line}  ${utils.rightPad(m, 40)} ${id}`
 }
 

lib/rules/title-length.js

@@ -10,21 +10,37 @@ module.exports = {
   }
 , defaults: {
     length: 50
+    , max_length: 72
   }
 , options: {
     length: 50
+    , max_length: 72
   }
 , validate: (context, rule) => {
+    const max = rule.options.max_length
+    if (context.title.length > max) {
+      context.report({
+        id: id
+      , message: `Title must be <= ${max} columns.`
+      , string: context.title
+      , maxLength: max
+      , line: 0
+      , column: max
+      , level: 'fail'
+      })
+      return
+    }
+
     const len = rule.options.length
     if (context.title.length > len) {
       context.report({
         id: id
-      , message: `Title must be <= ${len} columns.`
+      , message: `Title should be <= ${len} columns.`
       , string: context.title
       , maxLength: len
       , line: 0
       , column: len
-      , level: 'fail'
+      , level: 'warn'
       })
       return
     }