Add link to perl binding (fixes #36)

Author: AMDmi3

README.md

@@ -162,6 +162,7 @@ $ ./version_compare 0.99 1.0
 * Go: [golibversion](https://github.com/saenai255/golibversion) by @saenai255
 * Rust: [libversion-rs](https://github.com/repology/libversion-rs) by @AMDmi3 (not really a binding, but pure Rust implementation)
 * Ruby: [ruby-libversion](https://github.com/Zopolis4/ruby-libversion) by @Zopolis4
+* Perl: [Version::libversion::XS](https://github.com/giterlizzi/perl-Version-libversion-XS) by @giterlizzi
 
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