json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "$id": "https://raw.githubusercontent.com/matteocrippa/awesome-mobile-conferences/master/.github/schema.json",
      "type": "object",
      "properties": {
          "title": {
              "type": "string"
          },
          "header_contributing": {
              "type": "string"
          },
          "header": {
              "type": "string"
          },
          "ios_app_link": {
              "type": "string"
          },
          "android_app_link": {
              "type": "string"
          },
          "years": {
              "type": "array",
              "_uniqueItems": true
          },
          "conferences": {
              "type": "array",
              "_uniqueItems": true,
              "items": {
                  "title": "Conference Object",
                  "description": "An object that holds all the information for a specific conference.",
                  "properties": {
                      "title": {
                          "title": "Conference Title",
                          "description": "The official title of the conference.",
                          "type": "string"
                      },
                      "year": {
                          "title": "Conference Year",
                          "description": "The reference of the year of the conference.",
                          "type": "integer"
                      },
                      "startdate": {
                          "title": "Conference Start date",
                          "description": "A brief 1 sentence summary of the project.",
                          "type": "string"
                      },
                      "enddate": {
                          "title": "Conference End date",
                          "description": "A brief 1 sentence summary of the project.",
                          "type": "string"
                      },
                      "homepage": {
                          "title": "Conference Homepage",
                          "description": "The URL for the project's homepage.",
                          "type": [
                              "string",
                              "null"
                          ],
                          "pattern": "^https?:\\/\\/.*?\\..*$",
                          "default": null
                      },
                      "where": {
                          "title": "Conference Address",
                          "description": "Contains a google maps address.",
                          "type": "string"
                      },
                      "city": {
                          "title": "Conference City",
                          "description": "Contains the city of the conference.",
                          "type": "string"
                      },
                      "country": {
                          "title": "Conference Country",
                          "description": "Contains the country of the conference.",
                          "type": "string"
                      },
                      "callforpaper": {
                          "title": "Conference Call for paper flag",
                          "description": "Contains a flag that show if a call for paper is open.",
                          "type": "boolean"
                      },
                      "twitter": {
                          "title": "Conference twitter account",
                          "description": "Contains the twitter account of the conference.",
                          "type": "string"
                      },
                      "topics": {
                          "title": "Conference Topics",
                          "description": "Contains the topic of the conference, you can pick within ios, android, ui, ux.",
                          "type": "array"
                      },
                      "category": {
                          "title": "Conference Category",
                          "description": "Contains the category of the conference.",
                          "type": "array",
                          "items": {
                              "type": "string",
                              "enum": [
                                  "mobile",
                                  "ui",
                                  "ux",
                                  "frontend",
                                  "backend",
                                  "marketing",
                                  "devops"
                              ]
                          }
                      }
                  },
                  "required": [
                      "title",
                      "year",
                      "homepage"
                  ],
                  "additionalProperties": false
              }
          }
      },
      "required": [
          "title",
          "years",
          "conferences"
      ],
      "additionalProperties": false
  }