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_1.rs b/src/bin/day_1.rs
index 56ae0f7..4693579 100644
--- a/src/bin/day_1.rs
+++ b/src/bin/day_1.rs
@@ -8,7 +8,7 @@ use std::path::PathBuf;
 
 use im_rc::HashSet;
 
-// cargo watch -cs "cargo run --bin day_1"
+// cargo watch -cs "cargo run --release --bin day_1"
 
 fn main() -> Result<(), Box<Error>> {
     let input = read_file(&PathBuf::from("inputs/1.txt"))?;