Update copyright date

As per issue /Respect/project-info/issues/12

Author: nickl-

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2009-2011, Alexandre Gomes Gaigalas.
+Copyright (c) 2009-2013, Alexandre Gomes Gaigalas.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification,
@@ -24,4 +24,4 @@ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.