Readme should provide developer value

[Cahl-Dee]

See factom.js implementation for sample: https://github.com/PaulBernier/factomjs

At the least, linking to: https://godoc.org/github.com/FactomProject/factomd

[stackdump]

client only lib: https://godoc.org/github.com/FactomProject/factom

one path would be to nest more documentation in the code as comments it would render out on godoc