Add website documentation for Locked annotations

website/usageExamples/experimental/LockedExample_post.jpage

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+public class LockedExample {
+	private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
+	private final ReentrantLock baseLock = new ReentrantLock();
+	private int value = 0;
+
+	public int getValue() {
+		this.lock.readLock().lock();
+		try {
+			return value;
+		} finally {
+			this.lock.readLock().unlock();
+		}
+	}
+
+	public void setValue(int newValue) {
+		this.lock.writeLock().lock();
+		try {
+			value = newValue;
+		} finally {
+			this.lock.writeLock().unlock();
+		}
+	}
+
+	public void foo() {
+		this.baseLock.lock();
+		try {
+			System.out.println("bar");
+		} finally {
+			this.baseLock.unlock();
+		}
+	}
+}

website/usageExamples/experimental/LockedExample_pre.jpage

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+import lombok.experimental.Locked;
+
+public class LockedExample {
+	private int value = 0;
+
+	@Locked.Read
+	public int getValue() {
+		return value;
+	}
+
+	@Locked.Write
+	public void setValue(int newValue) {
+		value = newValue;
+	}
+
+	@Locked("baseLock")
+	public void foo() {
+		System.out.println("bar");
+	}
+}