additionalProperties, external document, self-describing resources

support these parts:

• additionalProperties, with boolean or Schema object
• external document, or external self-describing resources.

Hotfix

for issue #13, #14

Swagger 2.0 support (partially)

Support newly released spec: Swagger 2.0, except these features:

• external JSON Reference ($ref)
• pattern of string primitives

additional features planned:

• cyclic detection of $ref

0.0.2

new

• file upload
• SwaggerApp.validate, in older version, validation is done during loading json.

first release

0.0.1

prepare for pypi