allow dots in package names (closes #53)
allow dots in package names (closes #53)

Soullivaneuh/packagist,stof/packagist,ycms/packagist,Ocramius/packagist,roundcube/plugins.roundcube.net,composer/packagist,gencer/packagist,winmillwill/packagist-bundle,alcohol/packagist,Pasarkode/packagist,Soullivaneuh/packagist,interactive-investor-ltd/packagist,belanur/packagist,gencer/packagist,steve-todorov/packagist,Soullivaneuh/packagist,martha-ci/plugins.martha-ci.org,winmillwill/packagist-bundle,beryllium/packagist,enriquesomolinos/packagist,rhl-jfm/packagist,pepeh/packagist,rhl-jfm/packagist,alcohol/packagist,Ocramius/packagist,martha-ci/plugins.martha-ci.org,composer/packagist,stof/packagist,interactive-investor-ltd/packagist,belanur/packagist,pepeh/packagist,interactive-investor-ltd/packagist,beryllium/packagist,cgvarela/packagist,enriquesomolinos/packagist,drupal-composer/drupal-packagist,cgvarela/packagist,timmillwood/packagist,Pasarkode/packagist,timmillwood/packagist,rhl-jfm/packagist,roundcube/plugins.roundcube.net,gencer/packagist,cgvarela/packagist,interactive-investor-ltd/packagist,ycms/packagist,ycms/packagist,beryllium/packagist,localheinz/packagist,stof/packagist,composer/packagist,pepeh/packagist,composer/packagist,enriquesomolinos/packagist,alcohol/packagist,interactive-investor-ltd/packagist,localheinz/packagist,localheinz/packagist,steve-todorov/packagist,belanur/packagist,roundcube/plugins.roundcube.net,wolfcms/wolfextensions.org,Pasarkode/packagist,timmillwood/packagist,drupal-composer/drupal-packagist,wolfcms/wolfextensions.org,drupal-composer/drupal-packagist,steve-todorov/packagist