Resolves #150: RSpec redesign

* Conversion to RSpec's `expect` syntax.

Author: duggiefresh

Gemfile

@@ -1,4 +1,3 @@
-# Gemfile
 source 'https://rubygems.org'
 gemspec
 

lib/nmatrix/nmatrix.rb

@@ -226,7 +226,7 @@ def __yale_ary__to_s(sym) #:nodoc:
 
 
   ##
-  # call-seq: 
+  # call-seq:
   #   integer_dtype?() -> Boolean
   #
   # Checks if dtype is an integer type

nmatrix.gemspec

@@ -6,8 +6,8 @@ require 'nmatrix/version'
 Gem::Specification.new do |gem|
   gem.name = "nmatrix"
   gem.version = NMatrix::VERSION::STRING
-  gem.summary = "NMatrix is an experimental linear algebra library for Ruby, written mostly in C." 
-  gem.description = "NMatrix is an experimental linear algebra library for Ruby, written mostly in C." 
+  gem.summary = "NMatrix is an experimental linear algebra library for Ruby, written mostly in C."
+  gem.description = "NMatrix is an experimental linear algebra library for Ruby, written mostly in C."
   gem.homepage = 'http://sciruby.com'
   gem.authors = ['John Woods', 'Chris Wailes', 'Aleksey Timin']
   gem.email =  ['[email protected]']