Fix deprecation warning on ruby 2.4.0

lib/rspec/parameterized/table_syntax.rb:30: warning: constant ::Fixnum is deprecated
lib/rspec/parameterized/table_syntax.rb:34: warning: constant ::Bignum is deprecated

(cherry picked from commit 78661466bf46f26d088e49e7e873f2a250b3fb41)

Author: sue445

lib/rspec/parameterized/table_syntax.rb

@@ -30,12 +30,18 @@ module TableSyntax
         include TableSyntaxImplement
       end
 
-      refine Fixnum do
-        include TableSyntaxImplement
-      end
+      if Gem::Version.create(RUBY_VERSION) >= Gem::Version.create("2.4.0")
+        refine Integer do
+          include TableSyntaxImplement
+        end
+      else
+        refine Fixnum do
+          include TableSyntaxImplement
+        end
 
-      refine Bignum do
-        include TableSyntaxImplement
+        refine Bignum do
+          include TableSyntaxImplement
+        end
       end
 
       refine Array do