* Allows the hyphen to be part of the field.

 Allows IDs to contain a hyphen (but not to begin with one).
* Fix TestJsonPath.test_hyphen_key on Python 2.6

- Changed assertRaises in TestJsonPath.test_hyphen_key to 2.6
  unittest syntax.
Merge pull request #9 from jfardello/master

* Allows the hyphen to be part of the field.