Add argparse 0.2.2 as a dependency

This patch adds the crate rust-argparse [0] in version 0.2.2 as a
dependency, as discussed in issue #4.

[0]  https://github.com/tailhook/rust-argparse

Import subrepo argparse/:argparse at 0de60a5e6d9ee1a3570d6089afd3ccd6ed7480c5

1 files changed, 26 insertions, 0 deletions

diff --git a/argparse/examples/greeting.rs b/argparse/examples/greeting.rs
new file mode 100644
index 0000000..77e719c
--- /dev/null
+++ b/argparse/examples/greeting.rs
@@ -0,0 +1,26 @@
+extern crate argparse;
+
+use argparse::{ArgumentParser, StoreTrue, Store, Print};
+
+fn main() {
+    let mut verbose = false;
+    let mut name = "World".to_string();
+    {
+        let mut ap = ArgumentParser::new();
+        ap.set_description("Greet somebody.");
+        ap.add_option(&["-V", "--version"],
+            Print(env!("CARGO_PKG_VERSION").to_string()), "Show version");
+        ap.refer(&mut verbose)
+            .add_option(&["-v", "--verbose"], StoreTrue,
+            "Be verbose");
+        ap.refer(&mut name)
+            .add_option(&["--name"], Store,
+            "Name for the greeting");
+        ap.parse_args_or_exit();
+    }
+
+    if verbose {
+        println!("name is {}", name);
+    }
+    println!("Hello {}!", name);
+}