fix OS X build

.travis.yml

@@ -30,6 +30,8 @@ matrix:
   - env:
     - BUILD_SCRIPT=wininstall_travis.sh
     - QT_SELECT=qt5-x86_64-w64-mingw32
+  - os: osx
+    env: BUILD_SCRIPT=osx_travis.sh
 
 before_install:
   - ".travis/source.sh"

ProfileInterface.cpp

@@ -51,6 +51,7 @@
 #include <QDebug>
 #include <QColor>
 #include <QTimer>
+#include <QStyle>
 #include <QFile>
 #include <QUrl>
 #include <QDir>