Added an example for PyQt5 (#389)

* added pyqt5 example

* fixed example path on build

* improved pyqt example

* simplified example

CMakeLists.txt

@@ -308,7 +308,7 @@ export(TARGETS ${QTERMWIDGET_LIBRARY_NAME}
 
 # example application
 if(BUILD_EXAMPLE)
-    set(EXAMPLE_SRC example/main.cpp)
+    set(EXAMPLE_SRC examples/cpp/main.cpp)
     add_executable(example ${EXAMPLE_SRC})
     target_link_libraries(example ${QTERMWIDGET_LIBRARY_NAME})
 endif()

example/README

@@ -1 +0,0 @@
-here is sample program which uses QTermWidet for displaying a terminal

examples/README

@@ -0,0 +1 @@
+Here are two sample programs which use QTermWidget for displaying a terminal

examples/pyqt/main.py

@@ -0,0 +1,22 @@
+#!/usr/bin/python3
+from PyQt5 import QtWidgets
+from QTermWidget import QTermWidget
+
+
+class Terminal(QTermWidget):
+    def __init__(self, process: str, args: list):
+        super().__init__(0)
+        self.finished.connect(self.close)
+        self.setTerminalSizeHint(False)
+        self.setColorScheme("DarkPastels")
+        self.setShellProgram(process)
+        self.setArgs(args)
+        self.startShellProgram()
+        self.show()
+
+
+if __name__ == "__main__":
+    app = QtWidgets.QApplication([])
+    args = ["--clean", "--noplugin"]
+    term = Terminal("vim", args)
+    app.exec()