started creating the specification for the current version of blueprints

Blueprint-Specification-v1.md

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+# BentoBox Blueprint Specification
+
+**Version 1**
+
+The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC 2119](http://www.ietf.org/rfc/rfc2119.txt).
+
+## Introduction
+
+This specification defines a format that describes a region (made up of blocks and entities) of a [Minecraft](https://minecraft.net) world for the purpose of serialization and storage to disk or to JSON-based database. It is designed in order to allow maximum cross-compatibility between platforms, versions, and various states of modification.
+
+## Revision history
+
+| Version | Date | BentoBox version | Description
+|---|---|---|---|
+| 1 | 2019-06-09 | [1.5.0](https://github.com/BentoBoxWorld/BentoBox/releases/tag/1.5.0) | Initial version
+
+## Definitions
+
+## Specifications
+
+### Format
+
+The structure specified by this specification is persisted to the user-chosen storage method using the [JavaScript Object Notation](https://json.org) (JSON) format. The data must then be compressed using the ... data compression algorithm.
+
+Files using this specification must use one of the following file extensions:
+* `.blueprint` ;
+* `.blu`
+
+All field names in the specification are **case sensitive**.
+
+### Schema
+
+#### Fields
+
+| Field name | Type | Description |
+|---|---|---|
+| name | `String` | Name of the Blueprint |
+| icon | `String` | |
+| attached | `Array` | |
+| entities | `Array` | |
+| blocks | `Array` | |
+| xSize | `integer` | |
+| ySize | `integer` | |
+| zSize | `integer` | |
+| bedrock | `Array` | |