Update head line default to match unix op
Don’t increment counter on pre run.

Fixes #43.
Fix weird url issue in example on homepage
Fix a couple of typos
Add range function to cut

Refs #37
Refactor a bit (as @rossjones suggests in #39)
Merge pull request #44 from andylolz/43-fix-head

Don’t increment counter on pre run.
Merge pull request #45 from andylolz/37-cut-ranges

Add range function to cut
Add some missing semicolons