rename extension_spec to product_spec
initialize SUSE::Connect:YaST class
Point to proper classes
Merge pull request #28 from SUSE/review_140320_yast-adaptor

Review 140320 yast adaptor
Merge branch 'master' into review_140403_yast_abstraction_layer

* master:
  Point to proper classes
  initialize SUSE::Connect:YaST class
  rename extension_spec to product_spec

Conflicts:
	lib/suse/connect/yast.rb