Adds missing check for S in areadata
Doesn't snip off first line of section at first

Varea doesn't remove the first line of a section body before sticking it
into the contents of a section class. That is now the responsibility of
each class. (It allows for the current_line variable to be incrememted
prior to parsing a line rather than after, which means fewer times
needed to write the expression to increment it)
Adds Helps class

varea now creates a Helps object and pushes it onto its sections array.

Also missing @ in instance var in AreaData fixes.

Also Section adds :name as a attr_reader, subclasses set @name
appropriately.