Revert "Add fallback for sample in Ruby 1.8"

This reverts commit 4f3522fbac7b6b2fe1046254e3b01ebb12e494b8.
Revert "Fix Ruby 1.8 syntax"

This reverts commit 6768c3b0a48bfc394356fc4470092340e2297642.

Conflicts:
	lib/futuroscope/future.rb
No longer support 1.8 (yay!)