Added lots of examples and made README clearer.

README.md

@@ -12,15 +12,41 @@ Usage
 <reggie> <scott> This is a test.
 ```
 
-Prepend 'n' exclamation marks before the "s/" to make reggie replace the 'n'th
-last line you said (ignores the lines of others). 'n' is limited to the
-`@max_bangs` instance variable in reggie.rb.
+To replace the last line *you* said, ignoring other users' lines, prepend an
+exclamation mark to your replacement line.
+
+``` irc
+<scott> This is a tset.
+<some_guy> This is another tset.
+<scott> s/tset/test/
+<reggie> <some_guy> This is another test.
+<scott> !s/tset/test/
+<reggie> <scott> This is a test.
+```
+
+You can use multiple exclamation marks to refer to your even earlier lines.
+You can only use as many exclamation marks as the `@max_bangs` instance
+variable in `reggie.rb`, which is 3 by default.
 
 If you don't use any `!`s and reggie cannot match your regex to the previous
-line, it will try to match against your 'n' previous lines from most recent to
-earliest.
+line, it will try to match against your previous lines from most recent to
+earliest as if you had attempted `!s`, `!!s`, ..., until you got a match. This
+is also limited by the `@max_bangs` instance variable.
 
-Reggie handles /me (ACTION) lines correctly.
+``` irc
+<scott> This is a tset.
+<some_guy> Blah blah blah!
+<scott> s/tset/test/
+<reggie> <scott> This is a test.
+```
+
+Reggie handles `/me` (`ACTION`) lines correctly.
+
+``` irc
+* scott is tseting.
+<scott> s/tset/test/
+<reggie> * scott is testing.
+```
 
 Ruby Regex
 ----------