version bump
remove mysterious line, fix #384
Update docs.md

Changed typo "an" -> "and"
Merge pull request #389 from quasipickle/patch-1

Update docs.md
Fixed Deprecation in PHP6

Accessing Strings via Curly brackets will be deprecated in PHP6
http://php.net/manual/de/language.types.string.php#example-58 (above this example)

also i don't think it is as readable as brackets
Merge pull request #400 from Handfeger/master

Using square brackets instead of curly brackets to access string content
Fix typo in docs/docs.md

constrast -> contrast
Merge pull request #406 from TimWolla/patch-1

Fix typo in docs/docs.md
Adding viewport directives
Adding to directive tests
Merge pull request #407 from AnhNhan/master

Adding `@viewport` directive and relatives
Added the failing test for recursive mixins
Fixed the handling of recursive closures.

Fixes #324
Fixed the bootstrap testing on PHP 5.3
Removed useless statements