Add OS specific modules

src/windows.rs

@@ -0,0 +1,14 @@
+use super::utils::Check;
+use failure;
+use std::path::PathBuf;
+use std::process::Command;
+
+pub fn run_chocolatey(choco: &PathBuf) -> Result<(), failure::Error> {
+    Command::new(&choco)
+        .args(&["upgrade", "all"])
+        .spawn()?
+        .wait()?
+        .check()?;
+
+    Ok(())
+}