BUG: wrong email format validation

[giowe]

given a param validations like this:

"email": {
  "type": "string",
  "format": "email"
}

the validator allows a string like this test@test unless it does'n include a .xx after the domain.

[jsdevel]

@giowe is there a format defined by the spec? and can you submit a PR to fix this if it's different with a link to the spec?