Initial updates

Author: cholmes

README.md

@@ -1,12 +1,12 @@
-# Template Extension Specification
+# Geometry Metrics Extension Specification
 
-- **Title:** Template
-- **Identifier:** <https://vecorel.github.io/extension-template/v0.1.0/schema.yaml>
-- **Property Name Prefix:** template
+- **Title:** Geometry Metrics
+- **Identifier:** <https://vecorel.github.io/geometry-metrics/v0.1.0/schema.yaml>
+- **Property Name Prefix:** metrics:
 - **Extension Maturity Classification:** Proposal/Candidate/Stable
-- **Owner**: @your-gh-handles @person2
+- **Owner**: @cholmes @geospatial-jeff
 
-This document explains the Template Extension to the
+This document explains the Geometry Metrics Extension to the
 [Vecorel Specification](https://github.com/vecorel/specification).
 
 This is the place to add a short introduction.
@@ -26,8 +26,12 @@ The properties in the table below can be used in these parts of Vecorel document
 
 | Property Name   | Type   | Description |
 | --------------- | ------ | ----------- |
-| template:field1 | string | **REQUIRED**. Describe the required field... |
-| template:field2 | int32  | Describe the field... |
+| metrics:area    | float  | Area of the polygon |
+| metrics:perimeter | float | Perimeter of the polygon |
+| metrics:width | float |  |
+| metrics:height | float | |
+| metrics:micd | float | The Circumference-Area ratio (CA ratio) is calculated by dividing the circumference of a given polygon by the square root of its area. This ratio is then adjusted so that a circle corresponds to 0, and scaled so that a square corresponds to 1 | 
+| metrics:ca_ratio | float | | 
 
 ## Contributing