Added examples.

examples/src/main/java/com/example/ReadingTimeSample.java

@@ -0,0 +1,27 @@
+package com.example;
+
+import net.thauvin.erik.readingtime.ReadingTime;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class ReadingTimeSample {
+    public static void main(String[] args) {
+        if (args.length == 1) {
+            final Path text = Path.of(args[0]);
+            try {
+                final ReadingTime rt = new ReadingTime(Files.readString(text));
+                rt.setPostfix("minute to read");
+                rt.setPlural("minutes to read");
+
+                System.out.println("It will take " + rt.calcReadingTime() + ' ' + ReadingTime.wordCount(rt.getText())
+                                   + " words and " + ReadingTime.imgCount(rt.getText()) + " images.");
+            } catch (IOException e) {
+                System.err.println("The file could not be read or found.");
+            }
+        } else {
+            System.err.println("Please specify a file as an argument.");
+        }
+    }
+}