set Default page to DCF Documents Directory

[P1R]

• [x] set Default page to DCF Documents Directory
  • [x] Deploy all the DCF DOCS Directory from hackmd to this repository as a post with a permLink just as we did with the readme.
  • [x] The post SHOULD be shown on the book summary As DCF DIRECTORY
  • [x] Rename DCF DOCS to DCF DIRECTORY