day 1 optimizations, day 2 setup

2020/day_2/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "day_2"
+version = "0.1.0"
+authors = ["Ray Slakinski <ray.slakinski@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2020/day_2/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}