Use fork of send for retro-compatibility

Author: jpreynat

package.json

@@ -25,7 +25,7 @@
  "cheerio": "0.19.0",
  "gitbook-plugin-livereload": "0.0.1",
  "chokidar": "~1.0.5",
- "send": "0.2.0",
+ "send": "GitbookIO/send#9081de9cb0fc85d60e871685f252c98db764cb55",
  "tiny-lr": "0.2.1",
  "tmp": "0.0.24",
  "crc": "3.2.1",