Add meow example cli program

rust/meow/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "meow"
+version = "0.1.0"
+authors = ["Timothy Warren <twarren@nabancard.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = "2.33.0"

rust/meow/src/main.rs

@@ -0,0 +1,21 @@
+#[macro_use]
+extern crate clap;
+
+fn main() {
+    let matches = clap_app!(myapp =>
+        (version: "1.0")
+        (author: env!("CARGO_PKG_AUTHORS"))
+        (about: "Does awesome things")
+        (@arg config: -c --config +takes_value "Sets a custom config file")
+        (@arg INPUT: +required "Sets the input file to use")
+        (@arg verbose: -v ... "Sets the level of verbosity")
+        (@subcommand test =>
+            (about: "controls testing features")
+            (version: "1.3")
+            (author: "Someone E. <someone_else@other.com>")
+            (@arg debug: -d "print debug information")
+        )
+    ).get_matches();
+
+    println!("{:?}", matches);
+}