Added some explanatory text to hello_nacl
Added some explanatory text to hello_nacl


Former-commit-id: b703b73f0fd5e118e002bea6a3b0ee3befe10314
darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide