Merge pull request #6 from nubs/master

Update composer.
Merge pull request #7 from nubs/master

Remove PHP 5.3 support.
Use php 5.4 array syntax.
Merge pull request #8 from gaillard/master

Use php 5.4 array syntax.
Add scrutinizer configuration.  Fixes #3.
Add badges to readme.  Fixes #4.
Use {2,} syntax to be clearer about spaces.

The previous regex did not make things fully clear that 2+ spaces were
required between headers as the two spaces weren't easily visible as
such.  The range syntax is much clearer at defining the purpose.