Update README.rst
changed Informations to informations
added gitignore
separated function to deal with the hash check, tested it
Get verbatim tags. Important for hash checking.

I was having massive trouble here because ElementTree collapses empty tags. so, `<refProduct0></refProduct0>` became `<refProduct0 />`, thus affecting the MD5 checksum.
use lxml.html to avoid ElementTree problem with empty tags
pass correct argument
Updated test
Merge pull request #2 from fabiosantoscode/master

Merge pull request from fabiosantoscode:
  * Update README.rst
  * changed Informations to informations
  * added gitignore
  * separated function to deal with the hash check, tested it
  * Get verbatim tags. Important for hash checking.
  * use lxml.html to avoid ElementTree problem with empty tags
  * pass correct argument
  * Updated test