removed duplicate subtree note
added simpler version of empty branch creation git v1.7.2+
Merge remote-tracking branch 'cdkamat/master'

* Refer to the Subtree section explicitly

# By Chinmay Kamat
# Via Chinmay Kamat
* cdkamat/master:
  added simpler version of empty branch creation git v1.7.2+
  removed duplicate subtree note