QmlJS: Documentation.

Change-Id: I2a095e38b7d79a5fb39a16d8f32b48c8e28132f6
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@nokia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/libs/qmljs/qmljsutils.cpp

@@ -5,6 +5,11 @@
 using namespace QmlJS;
 using namespace QmlJS::AST;
 
+/*!
+  \namespace QmlJS
+  QML and JavaScript language support library
+*/
+
 namespace {
 class SharedData
 {