some small documentation updates

Ignore-this: ef109d4f2b422701440105d2265784cf

darcs-hash:20140827192553-fae1a-a76c9d92d2a4c28d20aa630144d9915782a2cfa1
update example program with a table

Ignore-this: ef46baed316a279e89487caa53404187

darcs-hash:20140828142636-fae1a-0e3712f3e7794224fbf1a7638ddab2de02954563
add copyright information

Ignore-this: ad065a113e7496e8effce3641651b468

darcs-hash:20140828191342-fae1a-c589d8c68150a7a731095bcfc4b26646f0594388