added error handling to documentation

README.md

@@ -73,6 +73,12 @@ As you are able to specify an objects _skeleton_, the next step is to push it to
     Project.drop(callback)
     Task.drop(callback)
     
+    // with error handling:
+    Project.[sync|drop](function(table, error) {
+      if(error) // oooh, did you entered wrong database credentials?
+      else // ok ... everything is nice!
+    })
+
 Because synchronizing and dropping all of your tables might be a lot of line to write, you can also let Sequelize do the work for you:
 
     // create all tables... now!
@@ -81,6 +87,12 @@ Because synchronizing and dropping all of your tables might be a lot of line to
     // and drop it!
     sequelize.drop(callback)
     
+    // with error handling:
+    sequelize.[sync|drop](function(errors) {
+      if(errors.length > 0) // whooops
+      else // woot woot
+    })
+
 ## Creating and working with instances ##
 
 In order to create instances of defined classes just do it as follows:

changelog.md

@@ -38,3 +38,4 @@
 
 # 0.3.1 #
 - added error handling when defining invalid database credentials
+- Sequelize#sync, Sequelize#drop, model#sync, model#drop returns errors via callback
\ No newline at end of file