Using `make install` to pack nigthly tarball?

multipy nightly tarball is packed by copying cmake build directory.

Lines 105 to 106 in 29b778e

    
                         cd multipy/runtime/build/dist 
        
                         tar -czvf multipy_runtime.tar.gz runtime/

It is a bit hacky and does not contain multipy/runtime prefix in this tarball.

Is it better to use make install to pack nightly tarball?

To be consistent with the rest of pytorch, it's probably best to not install directly to the path. However, we fixed up the path #79

Resolved by #79

	cd multipy/runtime/build/dist
	tar -czvf multipy_runtime.tar.gz runtime/