make notification interval configurable and allow modifying at runtime
make notification interval configurable and allow modifying at runtime

bitjson/bitcore,bitpay/bitcore-wallet-client,bitjson/bitcore,bitjson/bitcore,bitpay/bitcore,martindale/bitcore,bitpay/bitcore,martindale/bitcore,dabura667/bitcore-wallet-client,nohea/alohacore-wallet-client,bitpay/bitcore,martindale/bitcore,troggy/bitcore-wallet-client,matiu/bitcore-wallet-client,martindale/bitcore,bitpay/bitcore,bitjson/bitcore