Fix little things

lib/rubella/storage.rb

@@ -51,8 +51,6 @@ module Rubella
     # Returns the current length of the storage.
     # (How many datasets it holds.)
     #
-    # TODO Throw an error, if data has different lengths
-    #
     # @return Integer length
     #
     def length
@@ -62,6 +60,8 @@ module Rubella
     # Returns the length of a dataset.
     # Will return 0, if no datasets in storage.
     #
+    # TODO Throw an error, if data has different lengths
+    #
     # @return Integer length of one dataset
     #
     def dataset_length

spec/unit/rubella/input/base/data_spec.rb

@@ -8,4 +8,4 @@ describe Rubella::Input::Base, '.data' do
     expect(input.data).to eq([3, 4, 5])
   end
 
-end
+end

spec/unit/rubella/input/base/each_spec.rb

@@ -3,10 +3,10 @@ require 'spec_helper'
 describe Rubella::Input::Base, '.each' do
 
   it "passes the data through the given block" do
-    storage = Rubella::Input::Base.new [3, 4, 5]
+    input = Rubella::Input::Base.new [3, 4, 5]
 
     sum = 0
-    storage.each do |value|
+    input.each do |value|
       sum = sum + value
     end