Allow procs for label and value methods in grouped collection selects.
Use old hash syntax for Ruby 1.8 support.
some problems with transfer options

simple_fields_for don't passed options and it's created some problems like this:
ryanb/nested_form#219
ryanb/nested_form#226

because if wrapper option is false, then wrapper not transfered
Update test/action_view_extensions/builder_test.rb

add new test, when we define wrapper: false oprion, wrapper must be crashed
Update test/action_view_extensions/builder_test.rb

update for syntax
Merge pull request #720 from achempion/patch-1

some problems with transfer options
Change single-quoted to double-quoted tests descriptions
We are testing if simple_fields_for override the :wrapper options of the
parent
Merge branch 'issue-720'
Merge pull request #690 from svendahlstrand/grouped_collection_procs

Allow procs for label and value methods in grouped collection selects.
CHANGELOG for #690

Closes #623
Fix links on CHANGELOG [ci skip]
Merge branch 'master' into rails_4

Conflicts:
	lib/simple_form/action_view_extensions/builder.rb
	test/action_view_extensions/builder_test.rb