Rename unit and add task and specs

Author: paulgoetze

2_Numbers/1_The_different_types_of_numbers/solution.rb

@@ -0,0 +1,5 @@
+# e.g.:
+fixnum = 5
+bignum = 100_000_000_000_000_000_000
+rational = Rational(2, 7)
+complex = Complex(0.1, 2.5)

2_Numbers/1_The_different_types_of_numbers/solution_spec.rb

@@ -0,0 +1,22 @@
+require 'rspec'
+
+describe "Your code" do
+  [['solution::code']]
+
+  {
+    'fixnum' => Fixnum,
+    'bignum' => Bignum,
+    'rational' => Rational,
+    'complex' => Complex
+  }.each do |variable, class_name|
+    it "defines a variable with name \"#{variable}\"" do
+      expect(!!defined?(send(variable))).to be true
+    end
+
+    if defined?(send(variable))
+      it "defines a variable \"#{variable}\" which is a #{class_name}" do
+        expect(eval(variable).class).to eq class_name
+      end
+    end
+  end
+end

2_Numbers/1_Types_of_numbers/task.md …1_The_different_types_of_numbers/task.md2_Numbers/1_Types_of_numbers/task.md renamed to 2_Numbers/1_The_different_types_of_numbers/task.md 2_Numbers/1_Types_of_numbers/task.md renamed to 2_Numbers/1_The_different_types_of_numbers/task.md

@@ -76,7 +76,8 @@ Read more about Complex here: (ruby-doc core: Complex).
 
 ---
 
-Create some numbers of the different described types in the interactive Ruby console
-(`irb`) and press *v* to mark this unit green if you are done!
+Create a number of each described type and store it into a variable with the
+lowercased name of the number's class (e.g. *rational* for Rational).
+Create both types of Integers (*Fixnum* and *Bignum*)!
 
 ---