Simulator is just about ready for real-world testing now. Added a simulated

MOS6551 ACIA at address $C000 which does buffered input and output via the
console. Updated the README with a bit more documentation, and bumped the
version number to 0.1 because I'm impatient.

src/main/java/com/loomcom/symon/devices/Memory.java

@@ -9,17 +9,18 @@ public class Memory extends Device {
   private boolean readOnly;
   private int[] mem;
 
+  /* Initialize all locations to 0x00 (BRK) */
+  private static final int DEFAULT_FILL = 0x00;
+
   public Memory(int address, int size, boolean readOnly)
-    throws MemoryRangeException {
-    super(address, size, "RW Memory");
+  throws MemoryRangeException {
+    super(address, size, (readOnly ? "RO Memory" : "RW Memory"));
     this.readOnly = readOnly;
     this.mem = new int[size];
-    // Initialize all locations to 0x00 (BRK)
-    Arrays.fill(this.mem, 0x00);
+    Arrays.fill(this.mem, DEFAULT_FILL);
   }
 
-  public Memory(int address, int size)
-    throws MemoryRangeException {
+  public Memory(int address, int size) throws MemoryRangeException {
     this(address, size, false);
   }