Unbreak the nightly build

[guncha]

Typescript now has a transformers directory in ./src/compiler which caused the cp command to exit with message cp: omitting directory./src/compiler/transformers'` and exit code 1. The fix is to add -r flag to make it copy directories recursively.

[basarat]

Thanks! I've personally moved on to : https://github.com/basarat/byots as it

• has the same publicifying nature as ntypescript
• but uses official typescript and that helps prevent some confusion

:rose: