Initial minor changes (grammatical in methods; require -> require_relative in tri...).

src/about_triangle_project.rb

@@ -1,7 +1,7 @@
 require File.expand_path(File.dirname(__FILE__) + '/neo')
 
 # You need to write the triangle method in the file 'triangle.rb'
-require 'triangle.rb'
+require_relative 'triangle.rb'
 
 class AboutTriangleProject < Neo::Koan
   def test_equilateral_triangles_have_equal_sides