Vendor dependencies

Let's see how I like this workflow.

vendor/procfs/examples/dump.rs

@@ -0,0 +1,17 @@
+extern crate procfs;
+
+fn main() {
+    let pid = std::env::args().nth(1).and_then(|s| s.parse::<i32>().ok());
+
+    let prc = if let Some(pid) = pid {
+        println!("Info for pid={}", pid);
+        procfs::process::Process::new(pid).unwrap()
+    } else {
+        procfs::process::Process::myself().unwrap()
+    };
+    println!("{:#?}", prc);
+
+    let stat = prc.stat().unwrap();
+    println!("State: {:?}", stat.state());
+    println!("RSS:   {} bytes", stat.rss_bytes().unwrap());
+}