--help output improved. Command line message added. Examples:

 $ re completed reading the newspaper

 $ re RED spilled some coffee
(un)uglified the parentheses per special request from klaas.
indentation fixed. too
Offer current TIMESTAMP. Make BULLET and ADD_BLANK_LINES configurable through .rerc
Merge pull request #2 from jnweiger/master

--help output improved. Command line message added.