Version 1.0.0

* [x] Modularize methods for endpoints (Createable, Findable, Updateable)
* [x] Kill validators
* [x] Change `all` method to `search`
* [x] Ensure methods missing for endpoints with fewer accepted methods
* [x] Update docs
* [x] Allow passing URL for API
* [x] Lock to version 2 - Any new server version will likely cause a refactor of this library anyways
* [x] Pluralize endpoint names `fulcrum_client.record.find()` -> `fulcrum_client.records.find()`