Updated template to run in release mode

I'm trying to practice more functional idioms in Rust, and they tend
to be slower than expected if you're running in debug mode.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/bin/day_18.rs b/src/bin/day_18.rs
index 8ac18fc..2eed528 100644
--- a/src/bin/day_18.rs
+++ b/src/bin/day_18.rs
@@ -4,7 +4,7 @@ use advent_of_code_2018::*;
 use std::error::Error;
 use std::path::PathBuf;
 
-// cargo watch -cs "cargo run --bin day_18"
+// cargo watch -cs "cargo run --release --bin day_18"
 
 fn main() -> Result<(), Box<Error>> {
     let input = read_file(&PathBuf::from("inputs/18.txt"))?;