Add `make package` command for building pkg
Add `make package` command for building pkg

abbeycode/Carthage,NachoSoto/Carthage,0xced/Carthage,erichoracek/Carthage,flovilmart/Carthage,flovilmart/Carthage,erichoracek/Carthage,erichoracek/Carthage,abbeycode/Carthage,abbeycode/Carthage,abbeycode/Carthage,0xced/Carthage,0xced/Carthage,NachoSoto/Carthage,NachoSoto/Carthage,flovilmart/Carthage,erichoracek/Carthage