added a few packages to blacklist for plugins.cordova.io
added a few packages to blacklist for plugins.cordova.io

stevengill/cordova-docs,shazron/cordova-docs,apache/cordova-docs,purplecabbage/cordova-docs,apache/cordova-docs,stevengill/cordova-docs,shazron/cordova-docs,purplecabbage/cordova-docs,stevengill/cordova-docs,shazron/cordova-docs,purplecabbage/cordova-docs,apache/cordova-docs,tony--/cordova-docs,stevengill/cordova-docs,tony--/cordova-docs,apache/cordova-docs,tony--/cordova-docs,shazron/cordova-docs,purplecabbage/cordova-docs