Valid Jsonpath query is not parsed

[fabricereix]

the jsonpath query $.[0].name should be valid
though this is probably better written as $[0].name

With the following json response body

[
  { "id": 1, "name": "Bob"},
  { "id": 2, "name": "Bill"}
]

it should return "Bob"

[fabricereix]

fix in #97