Beatmap Format

I've tweaked the format since SIF Train into something more simple.

Sample:

{
  "metadata":{
    "songName":"TUTORIAL",
    "songFile":"song_0",
    "composer":"TUTORIAL",
    "lyricist":"TUTORIAL",
    "id":0,
    "difficultyName":"Debut",
    "difficulty":0,
    "attribute":0,
    "bpm":60,
    "duration":9.6},
  "notes":[
    {
      "id":1,
      "timing":0.6,
      "type":1,
      "startPos":3,
      "endPos":3,
      "status":0,
      "sync":0,
      "groupId":0,
      "nextNoteId":0,
      "prevNoteId":0
    },
    {
      "id":2,
      "timing":1.8,
      "type":1,
      "startPos":3,
      "endPos":3,
      "status":0,
      "sync":0,
      "groupId":0,
      "nextNoteId":0,
      "prevNoteId":0
    },
    {
      "id":3,
      "timing":3.0,
      "type":1,
      "startPos":3,
      "endPos":3,
      "status":0,
      "sync":0,
      "groupId":0,
      "nextNoteId":0,
      "prevNoteId":0
    },
    {
  "id":4,
  "timing":4.2,
  "type":1,
  "startPos":3,
  "endPos":3,
  "status":0,
  "sync":0,
  "groupId":0,
  "nextNoteId":0,
  "prevNoteId":0
},
{
  "id":5,
  "timing":5.4,
  "type":1,
  "startPos":3,
  "endPos":3,
  "status":0,
  "sync":0,
  "groupId":0,
  "nextNoteId":0,
  "prevNoteId":0
},
{
  "id":6,
  "timing":6.6,
  "type":1,
  "startPos":3,
  "endPos":3,
  "status":0,
  "sync":0,
  "groupId":0,
  "nextNoteId":0,
  "prevNoteId":0
}]`