updated readme and added sample output

sampleOutput.txt

@@ -0,0 +1,37 @@
+Examples
+============================
+
+Consider the following 4 invocations of logappend followed by an invocation of logread:
+
+$ ./logappend -T 1 -K secret -A -E Fred log1
+$ ./logappend -T 2 -K secret -A -G Jill log1
+$ ./logappend -T 3 -K secret -A -E Fred -R 1 log1
+$ ./logappend -T 4 -K secret -A -G Jill -R 1 log1
+These commands have used the key secret to append 4 events to the log log1, recording the arrival of Fred and Jill in room 1 of the gallery. If logread is then used to print the state of the gallery, the following should be printed:
+
+$ ./logread -K secret -S log1
+Fred
+Jill
+1: Fred,Jill
+If we continue using log1 and record some movements, we can then use logread to get a list of the rooms entered by Fred.
+
+./logappend -T 5 -K secret -L -E Fred -R 1 log1
+./logappend -T 6 -K secret -A -E Fred -R 2 log1
+./logappend -T 7 -K secret -L -E Fred -R 2 log1
+./logappend -T 8 -K secret -A -E Fred -R 3 log1
+./logappend -T 9 -K secret -L -E Fred -R 3 log1
+./logappend -T 10 -K secret -A -E Fred -R 1 log1
+./logread -K secret -R -E Fred log1
+1,2,3,1
+We can also use logappend in batch mode like so (on a fresh log log2):
+
+$ cat batch 
+-K secret -T 0 -A -E John log2
+-K secret -T 1 -A -R 0 -E John log2
+-K secret -T 2 -A -G James log2
+-K secret -T 3 -A -R 0 -G James log2
+$ ./logappend -B batch 
+$ ./logread -K secret -S log2
+John
+James
+0:James,John