Add docs about exposing features in C bindings
Add docs about exposing features in C bindings

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