Initial commit of n8n MCP Server

A Model Context Protocol (MCP) server that integrates with n8n, providing tools for workflow and execution management via the n8n API.

docs/setup/installation.md

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+# Installation Guide
+
+This guide covers the installation process for the n8n MCP Server.
+
+## Prerequisites
+
+Before installing the n8n MCP Server, ensure you have:
+
+- Node.js 18 or later installed
+- An n8n instance running and accessible via HTTP/HTTPS
+- API access enabled on your n8n instance
+- An API key with appropriate permissions (see [Configuration](./configuration.md))
+
+## Option 1: Install from npm (Recommended)
+
+The easiest way to install the n8n MCP Server is from npm:
+
+```bash
+npm install -g n8n-mcp-server
+```
+
+This will install the server globally, making the `n8n-mcp-server` command available in your terminal.
+
+## Option 2: Install from Source
+
+For development purposes or to use the latest features, you can install from source:
+
+```bash
+# Clone the repository
+git clone https://github.com/yourusername/n8n-mcp-server.git
+cd n8n-mcp-server
+
+# Install dependencies
+npm install
+
+# Build the project
+npm run build
+
+# Optional: Install globally
+npm install -g .
+```
+
+## Verifying Installation
+
+Once installed, you can verify the installation by running:
+
+```bash
+n8n-mcp-server --version
+```
+
+This should display the version number of the installed n8n MCP Server.
+
+## Next Steps
+
+After installation, you'll need to:
+
+1. [Configure the server](./configuration.md) by setting up environment variables
+2. Run the server
+3. Register the server with your AI assistant platform
+
+## Upgrading
+
+To upgrade a global installation from npm:
+
+```bash
+npm update -g n8n-mcp-server
+```
+
+To upgrade a source installation:
+
+```bash
+# Navigate to the repository directory
+cd n8n-mcp-server
+
+# Pull the latest changes
+git pull
+
+# Install dependencies and rebuild
+npm install
+npm run build
+
+# If installed globally, reinstall
+npm install -g .