new: added a working example

examples/simple_strategy.rs

@@ -0,0 +1,27 @@
+use backtestingfx::types::Bar;
+use backtestingfx::broker::Broker;
+use backtestingfx::strategy::Strategy;
+use backtestingfx::engine::Engine;
+use backtestingfx::data::load_csv;
+
+struct BuyEveryBar;
+
+impl Strategy for BuyEveryBar {
+    fn next (&mut self, bar: &Bar, broker: &mut Broker) {
+        broker.close_all(bar.close, bar.timestamp); //closes any open positions
+        broker.buy(bar.close, 1.0, bar.timestamp); // can be more complicated with buy, sells, close position, close all etc.
+    }
+}
+
+fn main() {
+    let data = load_csv("examples/data/eurusd_lse_1h.csv");
+    let mut engine = Engine::new(data, 10000.0);
+    let mut strategy = BuyEveryBar;
+
+    engine.run(&mut strategy); // main line that runs the strategy 
+
+    println!("Final cash: {}", engine.broker.cash);
+    println!("Trades executed: {}", engine.broker.trade_history.len());
+}
+
+