Fixes bug introduced when we moved `Token` into the func's parameters,
out of PostParams.

Moves the ID and token params out of PostParams and into the func's
parameters. A currently-unused `collection` parameter is left in for the
future, when the backend supports updating and deleting collection posts
via slug, not post ID.

Previously, they all said the same thing

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Merge tag 'v1.1'

Version 1, with a better README

This uses a local proxy to communicate over Tor. Code is from the
writeas-cli.

removed unreachable code

use correct verb for error formatting

This closes #3

writeas.github.io/docs -> developer.write.as/docs/api