Autocomment for begin/end of div's. Based on html-dicomment.sublime-snippet from Akella https://gist.github.com/akella/9757676

di.snippets.cson

#
'.text.html':
  'Div comment':
    'prefix': 'di'
    'body':
      '<!-- begin $1 --> \n<div class="$1"> \n$2 \n</div> \n<!-- end $1 -->'

# Add this code to snippets.cson of Atom
#
# Type di in your .html file
# press <Tab>, input class name
# 
# Result of execution:
#
#	  <!-- begin main -->
#	  <div class="main">
#
#	  </div>
#	  <!-- end main -->
#