Refactor parse deux
Merge pull request #43 from Dapperbot/reek-kaku

Refactor parse deux
Merge pull request #42 from Dapperbot/reek-lotyrin

Simplify Polyhedra#initialize
Negate -> sign
Extract method
Match parameter order
Kill number
Simplify assignment
simplify assignment
More consise
Prefer positive case
Scan has a block form already, no need to use each
Use reduce
Better descriptive name
Move sign out of die
Extract Die class
Use reduce
Remove assignment.