Add netbeans license header

Change-Id: Ifbcd6ed48676f85cb642fbff1254ecb6c8fee498
Reviewed-on: http://gerrit.dmdirc.com/3033
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

nbproject/licenseheader.txt

@@ -1,7 +1,7 @@
 <#if licenseFirst??>
 ${licenseFirst}
 </#if>
-${licensePrefix}Copyright (c) 2006-2012 DMDirc Developers
+${licensePrefix}Copyright (c) 2006-2014 DMDirc Developers
 ${licensePrefix}
 ${licensePrefix}Permission is hereby granted, free of charge, to any person obtaining a copy
 ${licensePrefix}of this software and associated documentation files (the "Software"), to deal

nbproject/project.properties

@@ -27,6 +27,7 @@ project.license=dmdirc
 application.title=DMDirc
 application.vendor=chris
 build.generated.sources.dir=${build.dir}/generated-sources
+project.licensePath=./nbproject/licenseheader.txt
 source.encoding=UTF-8
 doccheck.path=doccheck.jar
 doccheck.dir=reports/doccheck/