fixup class name incorrect case

v0.1.1

fixup class name

Mercurial Repository has gone!!

xrstf/ip-utils has gone.
https://bitbucket.org/xrstf/ip-utils
https://bitbucket.org/blog/sunsetting-mercurial-support-in-bitbucket

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remove
https://packagist.org/packages/jalle19/php-whitelist-check requires https://packagist.org/packages/xrstf/ip-utils

instead of
https://packagist.org/packages/wikimedia/ip-set

Keep Request instance Immutable

Merge pull request #2 from tyrellsys/clone_request

clone request

Add LICENSE

Merge pull request #1 from tyrellsys/add-license-1

Create LICENSE

first release

v0.0.1

update README.md