added README

README.md

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+# Form Generator
+
+A lightweight application for generating dynamic form websites and storing user responses. The form fields, labels, and behavior are fully configurable via a TOML configuration file.
+
+## Usage
+
+The server will listen on `127.0.0.1:8081` by default. You can override with:
+
+```bash
+SERVER_PORT=8082 form-generator
+```
+
+## Configuration
+
+The application is configured via a TOML file (default: `config.toml`).
+
+See [config.toml](./config.toml) for an example.
+
+### Configuration Fields
+
+* `json_output`: Path to the JSON file where responses are stored.
+
+* `submit_button`: Text displayed on the form’s submit button.
+
+* `fields`: List of form fields
+  * `name`: Internal key for storage.
+  * `title`: Label displayed in the form.
+  * `description`: Short description displayed below the field.
+  * `answer_type`: Type of input (`text`, `number`, `email`, `password`, `url`, `tel`, `textarea`).
+  * `html_before` (optional): HTML snippet rendered before the field.
+  * `html_after` (optional): HTML snippet rendered after the field.