Simplify 'using_controller' example

examples/simple.rs

@@ -0,0 +1,35 @@
+use bat::{
+    assets::HighlightingAssets,
+    controller::Controller,
+    inputfile::InputFile,
+    style::{OutputComponent, OutputComponents},
+    Config,
+};
+use console::Term;
+use std::process;
+
+fn main() {
+    let files = std::env::args().skip(1).collect::<Vec<_>>();
+
+    if files.is_empty() {
+        eprintln!("No input files specified");
+        process::exit(1);
+    }
+
+    let config = Config {
+        term_width: Term::stdout().size().1 as usize,
+        colored_output: true,
+        true_color: true,
+        output_components: OutputComponents::new(&[
+            OutputComponent::Header,
+            OutputComponent::Grid,
+            OutputComponent::Numbers,
+        ]),
+        files: files.iter().map(|file| InputFile::Ordinary(file)).collect(),
+        theme: "1337".into(),
+        ..Default::default()
+    };
+    let assets = HighlightingAssets::new();
+
+    Controller::new(&config, &assets).run().expect("no errors");
+}