updated readme

app/controllers/posts_controller.rb

@@ -0,0 +1,45 @@
+class PostsController < ApplicationController
+  load_and_authorize_resource :topic
+  load_and_authorize_resource :post, :through => :topic, :shallow => true
+    
+  def new
+    if params[:quote]
+      quote_post = Post.find(params[:quote])
+      if quote_post
+        @post.body = "[quote]#{quote_post.body}[/quote]"
+      end
+    end
+  end
+  
+  def create
+    @post.user = current_user
+    if @post.save
+      flash[:notice] = "Post was successfully created."
+      redirect_to topic_path(@post.topic)
+    else
+      render :action => 'new'
+    end
+  end
+  
+  def update
+    if @post.update_attributes(params[:post])
+      flash[:notice] = "Post was successfully updated."
+      redirect_to topic_path(@post.topic)
+    end
+  end
+  
+  def destroy  
+    if @post.topic.posts_count > 1
+      if @post.destroy
+        flash[:notice] = "Post was successfully destroyed."
+        redirect_to topic_path(@post.topic)
+      end
+    else
+      if @post.topic.destroy
+        flash[:notice] = "Topic was successfully deleted."
+        redirect_to forum_path(@post.forum)
+      end
+    end
+  end
+  
+end