clean up the Base64 encoding code
clean up the Base64 encoding code

salah-ghanim/FHSTwitterEngine,salah-ghanim/FHSTwitterEngine,fhsjaagshs/FHSTwitterEngine,victorwon/FHSTwitterEngine,fhsjaagshs/FHSTwitterEngine,munchios1/FHSTwitterEngine,fhsjaagshs/FHSTwitterEngine