Initial commit
Merge branch 'master' of https://github.com/giuseppepaul/php-css-parser

# By Raphael Schweikert (111) and others
# Via Raphael Schweikert
* 'master' of https://github.com/giuseppepaul/php-css-parser: (173 commits)
  Ignore Exceptions during rule set and list render
  Fix unit tests for changed default output.
  Initial output formatting options
  Make Format mandatory when calling render()
  Implement changes necessary to format output
  Update CHANGELOG.md
  Update CHANGELOG for 5.2
  Add of the removeSelector from Block (previously in the todo list)
  Update README.md
  Add `fr` relative size unit
  Update README.md
  Update Selector.php
  Update Parser.php
  Update .travis.yml
  Update README.md
  add travis ci config
  Allow the unit tests to be run from the main dir
  update CHANGELOG for 5.1.2
  Fixed comments parsing and test added
  Update CHANGELOG.md to reflect changes since 5.0.4
  ...

Conflicts:
	README.md