Add download support to CLI and client

Implemented file and folder download functionality in the CLI and GofileClient, including new CLI arguments for downloading by URL or content ID and specifying output directory.

README.md

@@ -8,10 +8,11 @@ It supports the free API tiers, streaming uploads (low memory usage for large fi
 ## Features
 
 - **Streaming Uploads**: Upload 100GB+ files without loading them into RAM.
+- **Download Support**: Download files from Gofile URLs or content IDs.
 - **Folder Management**: Upload to specific folders or create new ones automatically.
 - **Script Ready**: JSON output mode for easy parsing in pipelines.
 - **Free Tier Support**: Handles Guest accounts and Standard tokens.
-- **Progress Bar**: Visual feedback for long uploads.
+- **Progress Bar**: Visual feedback for long uploads and downloads.
 
 ## Installation
 
@@ -68,6 +69,24 @@ Upload multiple files. The first file creates a folder, and the rest are uploade
 gofilepy -s part1.rar part2.rar part3.rar
 ```
 
+### Download Files
+Download files from a Gofile URL or content ID.
+
+Download from URL:
+```bash
+gofilepy -d https://gofile.io/d/GxHNKL
+```
+
+Download from content ID:
+```bash
+gofilepy -d GxHNKL
+```
+
+Download to specific directory
+```bash
+gofilepy -d GxHNKL -o ./downloads
+```
+
 ### Scripting Mode (JSON Output)
 Use `--json` to suppress human-readable text and output a JSON array.
 
@@ -87,6 +106,8 @@ gofilepy -vv big_file.iso
 
 You can use `gofilepy` in your own Python scripts.
 
+### Upload Files
+
 ```python
 from gofilepy import GofileClient
 
@@ -97,6 +118,17 @@ print(file.name)
 print(file.page_link)  # View and download file at this link
 ```
 
+### Download Files
+
+```python
+from gofilepy import GofileClient
+
+client = GofileClient()
+contents = client.get_contents("GxHNKL")
+print("Folder contents:")
+print(contents)
+```
+
 ## Development
 
 For contributors and developers: