Added an example for PyQt5 (#389)

* added pyqt5 example

* fixed example path on build

* improved pyqt example

* simplified example

examples/cpp/RemoteTerm/remoteterm.h

@@ -0,0 +1,19 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <qtermwidget5/qtermwidget.h>
+
+class QTcpSocket;
+
+class RemoteTerm : public QTermWidget
+{
+    Q_OBJECT
+public:
+    RemoteTerm(const QString &ipaddr, quint16 port, QWidget *parent = 0);
+public slots:
+     void atError();
+private:
+    QTcpSocket *socket;
+};
+
+#endif // WIDGET_H