Cleanup README by removing usage section

Removed detailed usage instructions and examples for Sublist3r from README.

README.md

@@ -37,117 +37,3 @@ pip install -r requirements.txt || true
 # run tests
 pytest -q
 
-Usage
-
-Command line
-
-# basic usage
-python3 ./sublist3r.py -d example.com
-
-# use the console script after activating venv
-sublist3r -d example.com -t 10 -o results.txt
-
-Options
-
--d, --domain Domain name to enumerate subdomains of
-
--b, --bruteforce Enable the subbrute bruteforce module
-
--p, --ports Scan found subdomains against specific TCP ports
-
--v, --verbose Enable verbose mode and display results in realtime
-
--t, --threads Number of threads to use for bruteforce or lookups
-
--e, --engines Comma separated list of search engines to use
-
--o, --output Save results to a text file
-
--h, --help Show help and exit
-
-Examples
-
-# show help
-python3 sublist3r.py -h
-
-# enumerate subdomains
-python3 sublist3r.py -d example.com
-
-# enumerate and scan ports 80 and 443
-python3 sublist3r.py -d example.com -p 80,443
-
-# enable bruteforce
-python3 sublist3r.py -b -d example.com
-
-
-Using Sublist3r as a module
-
-import sublist3r
-
-subdomains = sublist3r.main(
-    domain="example.com",
-    no_threads=40,
-    savefile="example_subdomains.txt",
-    ports=None,
-    silent=False,
-    verbose=False,
-    enable_bruteforce=False,
-    engines=None
-)
-
-print(len(subdomains), "unique subdomains found")
-
-Return value The main function returns a set of unique subdomain strings.
-
-Dependencies and supported Python versions
-Supported Python This fork targets Python 3.8 or newer.
-
-Key dependencies
-
-requests
-
-dnspython
-
-beautifulsoup4
-
-Install dependencies with:
-pip install -r requirements.txt
-Add or update requirements.txt with pinned minimums for reproducible installs.
-
-Tests and CI
-This fork includes unit tests and small repro scripts under tests/ and a GitHub Actions workflow at .github/workflows/ci.yml that runs pytest on push and pull requests.
-
-Run tests locally:
-pytest -q
-
-License
-This project is licensed under the GNU GPL v2. See the LICENSE file for details.
-
-Credits
-
-TheRook — subbrute integration and bruteforce approach
-
-Bitquark — inspiration for the subbrute wordlist
-
-Ahmed Aboul-Ela — original Sublist3r project
-
-Contributing
-
-If you want to contribute, please:
-
-Fork the repository and create a feature branch.
-
-Add tests for new behavior.
-
-Open a pull request with a clear description and reproduction steps.
-
-See CONTRIBUTING.md for more details.
-
-Changelog
-Unreleased
-
-Defensive DNSdumpster CSRF extraction and fallback parsing.
-
-Nameserver validation to avoid dnspython errors.
-
-Unit tests and CI added.