Document the readme

Author: SamyPesse

README.md

@@ -1,7 +1,19 @@
-# `openapi-to-validate`
+# `openapi-static-validator`
 
 CLI to compile an OpenAPI specification as JavaScript validation file, optimized for performances.
 
+## Installation
+
+```
+npm install openapi-static-validator -g
+```
+
+## Usage
+
+```
+openapi-static-validator spec.json > validate.js
+```
+
 ## TODOs
 
 -   Path/Operations
@@ -17,3 +29,10 @@ CLI to compile an OpenAPI specification as JavaScript validation file, optimized
     -   [x] `uniqueItems`
 -   JSONSchema `integer`
     -   [ ] no float
+
+## Development
+
+To publish the package:
+- Change version in `package.json`
+- Commit the change and tag it
+- Run `npm publish`