Update README.md

README.md

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 # pyqt-left-right-list-widget
 PyQt QListWidget which can add QListWidgetItem consist of two words. One word is left-aligned, the other is right-aligned.
+
+## Requirements
+PyQt5 >= 5.8
+
+## Setup
+```pip3 install git+https://github.com/yjg30737/pyqt-left-right-list-widget.git --upgrade```
+
+## Usage
+```addLeftRightItem(left_str: str, right_str: str)``` to insert a pair of word at the end of the list widget.
+
+## Example
+Code Sample
+```python
+from PyQt5.QtWidgets import QHBoxLayout, QApplication, \
+    QVBoxLayout, QPushButton, QWidget
+
+from pyqt_left_right_list_widget import LeftRightListWidget
+
+
+class LeftRightListWidgetTestExample(QWidget):
+    def __init__(self):
+        super().__init__()
+        self.__initUi()
+
+    def __initUi(self):
+        delBtn = QPushButton('Delete')
+        delBtn.clicked.connect(self.__delete)
+
+        lay = QHBoxLayout()
+        lay.addWidget(delBtn)
+        lay.setContentsMargins(0, 0, 0, 0)
+
+        topWidget = QWidget()
+        topWidget.setLayout(lay)
+
+        self.__listWidget = LeftRightListWidget()
+        # Add three pair of words
+        self.__listWidget.addLeftRightItem('Ganon', 'Villain')
+        self.__listWidget.addLeftRightItem('Zelda', 'Princess')
+        self.__listWidget.addLeftRightItem('Link', 'Hero')
+        lay = QHBoxLayout()
+        lay.addWidget(self.__listWidget)
+        lay.setContentsMargins(0, 0, 0, 0)
+
+        bottomWidget = QWidget()
+        bottomWidget.setLayout(lay)
+
+        lay = QVBoxLayout()
+        lay.addWidget(topWidget)
+        lay.addWidget(bottomWidget)
+
+        mainWidget = QWidget()
+        mainWidget.setLayout(lay)
+
+        self.setLayout(lay)
+
+    # Remove selected item
+    def __delete(self):
+        item = self.__listWidget.currentItem()
+        if item:
+            self.__listWidget.takeItem(self.__listWidget.currentRow())
+
+
+if __name__ == "__main__":
+    import sys
+
+    app = QApplication(sys.argv)
+    ex = LeftRightListWidgetTestExample()
+    ex.show()
+    sys.exit(app.exec_())
+```
+
+Result
+
+![image](https://user-images.githubusercontent.com/55078043/148160564-b280439f-3a9c-403d-8976-395d9c750f82.png)