POST https://api.github.com/repos/Pomax/gh-blog/git/trees?1393981519258 422 (Unprocessable Entity) api.github.com/repos/Pomax/gh-blog/git/trees?1393981519258:1
POST https://api.github.com/repos/Pomax/gh-blog/git/commits?1393981519451 422 (Unprocessable Entity) api.github.com/repos/Pomax/gh-blog/git/commits?1393981519451:1
Uncaught TypeError: Cannot read property 'sha' of undefined 

{
  "message": "Must supply tree.sha or tree.content",
  "documentation_url": "http://developer.github.com/v3/git/trees/#create-a-tree"
}

{
  "message": "Validation Failed",
  "documentation_url": "http://developer.github.com/v3/git/commits/#create-a-commit",
  "errors": [
    {
      "value": null,
      "resource": "Commit",
      "field": "tree",
      "code": "missing"
    }
  ]
}