Give asset image in hexo a absolutely path automatically

npm install hexo-asset-image --save

MacGesture2-Publish
├── apppicker.jpg
├── logo.jpg
└── rules.jpg
MacGesture2-Publish.md

Make sure post_asset_folder: true in your _config.yml.

Just use ![logo](logo.jpg) to insert logo.jpg.

2018-04-18: support hexo-abbrlink