Use base64 for saving image

[ykrsm]

• Use ref or embed in user scheme? User can
• Upload
• Delete
• Update

Routes

* PUT /user/uploadpic

In Json format

{
  binary: Base64,   // image data in base 64 format
  contentType: string //extension of image (png, jpg, etc.)
  update: boolean,  // True if updating image. False if first time
  delete: boolean,   // True if deleting image
}