5.4.30
update the README for latest changes
Merge branch '5_4_mountainlion' into 5_5_mountainlion

* 5_4_mountainlion:
  update the README for latest changes
update the README for latest changes
Merge branch '5_4_mountainlion' into 5_5_mountainlion

* 5_4_mountainlion:
  update the README for latest changes