Error message
scipy-0.15.1-cp34-none-win_amd64.whl is not a supported wheel on this platform
What happened
Pip incorrectly determined the operating system to be 32-bit rather than 64-bit as specified in the file name.
The solution
Rename the file to:
scipy-0.15.1-cp34-none-win32.whl
and try again. This will work and install the 64-bit version of scipy.