Add deprecation warnings

Author: andreibondarev

lib/split/encapsulated_helper.rb

@@ -43,6 +43,11 @@ def ab_test(*arguments)
       end
     end
 
+    def ab_test_finished(*arguments)
+      warn 'DEPRECATION WARNING: ab_test_finished is deprecated and will be removed from Split 1.5.0'
+      split_context_shim.finished *arguments
+    end
+
     private
 
     # instantiate and memoize a context shim in case of multiple ab_test* calls

lib/split/helper.rb

@@ -86,6 +86,13 @@ def split_generically_disabled?
       defined?(params) && params['SPLIT_DISABLE']
     end
 
+    def begin_experiment(experiment, alternative_name = nil)
+      warn 'DEPRECATION WARNING: begin_experiment is deprecated and will be removed from Split 1.5.0'
+      alternative_name ||= experiment.control.name
+      ab_user[experiment.key] = alternative_name
+      alternative_name
+    end
+
     def ab_user
       @ab_user ||= User.new(self)
     end