message: swig/README.md comment on building windows x6
diff: # building everything - Feb 7th
  1. On macos: ./build-macos.sh
  2. On jlibtorrent ec2 machine ubuntu: ./build_on_jlibtorrent_machine.sh (builds everything except windows x86)
  -3. On vmware ubuntu: ./build_from_vmware.sh (builds windows x86 only)
  +3. On vmware ubuntu: ./build_from_vmware.sh (builds windows x86 only - not necessary for frostwire)
  4. On vmware ubuntu: ./download_android_binaries_from_jlibtorrent_machine.sh
  # libtorrent.i, libtorrent.h
  