add some docs for destroy! and delete_all!

README.markdown

@@ -101,4 +101,19 @@ end
 </pre>
 
 Call <code>ActsAsArchive.update</code> upon adding new indexes
-(see <a href="#create_archive_tables">_Create archive tables_</a>).
+(see <a href="#create_archive_tables">_Create archive tables_</a>).
+
+Delete records without archiving
+--------------------------------
+
+To destroy a record without archiving it, use:
+
+<pre>
+article.destroy!
+</pre>
+
+To delete records without archiving, use:
+
+<pre>
+Article.delete_all!(["id in (?)", [1,2,3]])
+</pre>

spec/acts_as_archive/base/destroy_spec.rb

@@ -20,6 +20,20 @@
     end
 
   end
+
+  describe 'destroy!' do
+
+    before(:all) do
+      create_records
+      @article = Article.first
+    end
+
+    it "should really destroy a records" do
+      @article.destroy!
+      Article::Archive.count.should == 0
+    end
+
+  end
 
   describe 'delete_all' do
 
@@ -100,4 +114,4 @@
       end
     end
   end
-end
+end