(ruby): Wrap the handler class in a module

This is needed for when we define the handler later

Author: alex9smith

lambda/ruby/lib/lambda_function.rb

@@ -1,5 +1,7 @@
-class Handler
-    def add(first, second)
-        return first + second
+module Lambda
+    class Handler
+        def add(first, second)
+            return first + second
+        end
     end
 end

lambda/ruby/spec/lambda_function_spec.rb

@@ -1,11 +1,11 @@
 require 'rspec'
 require 'lambda_function'
 
-RSpec.describe Handler do
+RSpec.describe Lambda do
     describe "#add" do
         it "adds two numbers together" do
-            handler = Handler.new
-            expect(handler.add(1,2)).to eq(3) 
+            handler = 
+            expect(Lambda::Handler.new.add(1,2)).to eq(3) 
         end
     end
 end