remove unnecessary keys in tree

many of the keys are just links to other endpoints. Not much of this is useful, so it would make things cleaner to just not include them. Here is an example of what might get deleted:

This is edited from the results given from a request to the repo endpoint of the api

Repo Structure (This is a fairly liberal list, I think it could probably be cut down more)

{
    "id": 59394602,
    "name": "AaronConversation",
    "full_name": "needmorecowbell/AaronConversation",
    "private": false,
    "owner": {
      "login": "needmorecowbell"
    },
    "html_url": "https://github.com/needmorecowbell/AaronConversation",
    "description": "Old code from a fun postal service experience",
    "fork": false,
    "url": "https://api.github.com/repos/needmorecowbell/AaronConversation",
    "forks_url": "https://api.github.com/repos/needmorecowbell/AaronConversation/forks",
    "created_at": "2016-05-22T04:20:41Z",
    "updated_at": "2016-05-22T04:21:56Z",
    "pushed_at": "2016-05-22T04:21:55Z",
    "size": 9,
    "stargazers_count": 0,
    "watchers_count": 0,
    "language": "Java",
    "has_issues": true,
    "has_projects": true,
    "has_downloads": true,
    "has_wiki": true,
    "has_pages": false,
    "forks_count": 0,
    "open_issues_count": 0,
    "license": null,
    "forks": 0,
    "open_issues": 0,
    "watchers": 0,
    "default_branch": "master"
 }

needmorecowbell / giggity

remove unnecessary keys in tree #7