add information for windows users about selecting the right arch
add information for windows users about selecting the right arch

sholsapp/cryptography,skeuomorf/cryptography,Ayrx/cryptography,kimvais/cryptography,Ayrx/cryptography,bwhmather/cryptography,dstufft/cryptography,skeuomorf/cryptography,dstufft/cryptography,dstufft/cryptography,Hasimir/cryptography,kimvais/cryptography,sholsapp/cryptography,Hasimir/cryptography,skeuomorf/cryptography,sholsapp/cryptography,kimvais/cryptography,bwhmather/cryptography,bwhmather/cryptography,Ayrx/cryptography,Hasimir/cryptography,skeuomorf/cryptography,dstufft/cryptography,Ayrx/cryptography,dstufft/cryptography,bwhmather/cryptography,kimvais/cryptography,sholsapp/cryptography,Hasimir/cryptography