Replaced the broken relative javadoc link with a working absolute URL pointing to the hosted documentation. This ensures easier access to the API reference for users.
The javadoc.sh script was specific to a local environment and is no longer needed. Removing it ensures cleaner code and avoids confusion or potential misuse.
Introduce Javadoc-related files (`javadoc.sh`, `options`, and `packages`) for API documentation generation. Update README to improve clarity on usage examples and remove redundant "Example" headings for a cleaner presentation.
Expanded the API documentation by including practical examples for the `CfDnsClient` class. Updated Javadoc metadata and modified the index.html title for better context.
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