1. Embed your code to C code and link with -ljulia.
2. Look at this post it has some hints at how to make a complete binary http://www.juliabloggers.com/static-and-ahead-of-time-aot-compiled-julia/
However, these will need everything julia depends to work normally.
Having said that, julia codes are usually distributed as packages. http://pkg.julialang.org