add CSV offset, CLI
Path stuff
Merge remote-tracking branch 'rjocoleman/cli'

Conflicts:
	ampersat.gemspec
	lib/ampersat.rb
Rename offset option to column

Offset made me think of starting on line N
Merge branch 'rename_offset'

Conflicts:
	ampersat.gemspec
	bin/ampersat
	lib/ampersat.rb
	lib/ampersat/cli.rb
	spec/ampersat_spec.rb