Replace colon to dash

Fixed an issue that could not be saved properly if the title included colon.

Author: inertiave

crawler/index.js

@@ -79,7 +79,7 @@ class Crawler {
   }
 
   async writePost(post) {
-    const path = join('backup', 'content', `${post.title.replace(/\//g, ' ')}.md`);
+    const path = join('backup', 'content', `${post.title.replace(/\//g, ' ').replace(':','-')}.md`);
 
     post.body = '---\n'
                 + `title: "${post.title}"\n`
@@ -116,4 +116,4 @@ class Crawler {
 
 };
 
-module.exports = Crawler;
+module.exports = Crawler;