Update getting-started.rst

The tutorial assumes Doctrine 2.4
Merge pull request #700 from rbroen/patch-2

Update getting-started.rst
list_bugs.php needs to call to getters for protected vars

list_bugs.php needs to call to getters for protected vars. This was changed in the "getting-started" code repository, but not in the "getting-started" tutorial.
Merge pull request #701 from rbroen/patch-2

list_bugs.php needs to call to getters for protected vars
Second cache level POC
First round of refactory
Fix factory method name
refactoring region access tests
basically support for many to many collection
Refactoring tests
store cascade collections
refactoring collections store
handle one to many collections storage
tests put entities on persist
test one to many orphan removal
drop support for Region#toArray and Region#count
Configurable cache interface
test DefaultCache
drop cache key api from cache interface
refactoring default cache test