Make the example more complete and add some comments walking the user through some stuff.
Make the example more complete and add some comments walking the user through some stuff.

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