add MINFO method, and display both extension and library versions
add MINFO method, and display both extension and library versions

maxmind/MaxMind-DB-Reader-php,maxmind/MaxMind-DB-Reader-php,jbboehr/MaxMind-DB-Reader-php,maxmind/MaxMind-DB-Reader-php,jbboehr/MaxMind-DB-Reader-php,jbboehr/MaxMind-DB-Reader-php