Wrap at 80 lines

Related to #14.

There are a few lines left which exceed 80 chars:

https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L17
https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L33
https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L43
https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L48
https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L63
https://github.com/pietbrauer/pod-template/blob/e10b0fc262060898340b49ceaee8f53945363db3/Rakefile#L94

What should I do with them? Extract them into methods that return strings?