help string template stored at the top of the file...

... where it's easiest to discover.  while i'm at it,
the ~/.y2m template follows suite.
help string template has more information...

... structure of a man page.  hopefully, more information.
also, goes throught $PAGER because it's quite long.
help command with regular implementation
y2m reacts to --help as well
Merge pull request #12 from roman-neuhauser/help-redone

Help redone