Remove error prone automatic property converting

This caused some weird errors, wasn't really used and didn't really
follow the principe of least surprise :)

Author: bittersweet

example/app/controllers/posts_controller.rb

@@ -11,12 +11,12 @@ def index
   def show
     @post = Post.find(params[:id])
 
+    track_action '[visits] post', post_id: @post.id
+
     respond_to do |format|
       format.html
       format.json { render json: @post }
     end
-
-    track_action '[visits] post', :post => :id
   end
 
   def new
@@ -73,7 +73,7 @@ def destroy
   # Useful for testing if every event gets tracked when using persist: true.
   def redirect
     @post = Post.find(params[:id])
-    track_action '[redirect] post', post_id: @post.id
+    track_action '[redirects] post', post_id: @post.id
     redirect_to @post
   end
 end

lib/ab_panel/controller_additions.rb

@@ -70,21 +70,19 @@ def initialize_ab_panel!(options = {})
     # Example:
     #
     #   def show
-    #     track_action '[visits] Course', { :course => :id }
+    #     track_action '[visits] Course', { :course_id => @course.id }
     #   end
     #
     # This will track the event with the given name on CoursesController#show
-    # and assign an options hash:
-    #
-    #   { 'course_id' => @course.id }
+    # with the passed in attributes.
     def track_action(name, properties = {})
       AbPanel.add_funnel(properties.delete(:funnel))
 
       options = {
         distinct_id: distinct_id,
         ip:          request.remote_ip,
         time:        Time.now.utc,
-      }
+      }.merge(properties)
 
       AbPanel.funnels.each do |funnel|
         options["funnel_#{funnel}"] = true
@@ -94,22 +92,8 @@ def track_action(name, properties = {})
         options[exp] = AbPanel.conditions.send(exp).condition rescue nil
       end
 
-      properties.each do |key, val|
-        if respond_to?(key)
-          inst = send(key)
-        elsif instance_variable_defined?("@#{key}")
-          inst = instance_variable_get("@#{key}")
-        else
-          options[key] = val
-          next
-        end
-
-        val = *val
-
-        val.each do |m|
-          options["#{key}_#{m}"] = inst.send(m)
-        end
-      end
+      options.merge!(ab_panel_options)
+      AbPanel.set_env(:properties, options)
 
       AbPanel.identify(distinct_id)
       AbPanel.track(name, options.merge(ab_panel_options))