graphql-js docs don't list any class methods

[spencerhakim]

Unless I'm missing something, you have to dig into the source to see what, if any, methods are defined on the GraphQL* classes in the graphql-js docs. Currently only the constructors are listed.

• https://github.com/graphql/graphql-js/blob/v0.9.1/src/type/definition.js#L315
• https://github.com/graphql/graphql-js/blob/v0.9.1/src/type/definition.js#L415
• https://github.com/graphql/graphql-js/blob/v0.9.1/src/type/schema.js#L156
• etc.