Update README.md

Author: yjg30737

README.md

@@ -1,2 +1,41 @@
 # pyqt-transparent-timer
 PyQt transparent timer
+
+## Requirements
+PyQt5 >= 5.8
+
+## Setup
+```pip3 install git+https://github.com/yjg30737/pyqt-transparent-timer.git --upgrade```
+
+## Included Packages
+* <a href="https://github.com/yjg30737/pyqt-notifier.git">pyqt-notifier</a>
+* <a href="https://github.com/yjg30737/pyqt-resource-helper.git">pyqt-resource-helper</a>
+
+## Example
+Code Sample
+```python
+from PyQt5.QtWidgets import QApplication
+from pyqt_transparent_timer import TransparentTimer
+
+
+if __name__ == "__main__":
+    import sys
+
+    app = QApplication(sys.argv)
+    tm = TransparentTimer()
+    tm.show()
+    app.exec_()
+```
+
+Result
+
+![image](https://user-images.githubusercontent.com/55078043/149067604-650f7927-5470-44a2-b505-c863e28d8237.png)
+
+When mouse cursor is hovering over the widget, border and background will show up.
+
+![image](https://user-images.githubusercontent.com/55078043/149068105-d399fa18-1e48-4556-9d29-90c4f7a3e53e.png)
+
+Except for graphics, this module operates the same way as pyqt-timer.
+
+## See also
+<a href="https://github.com/yjg30737/pyqt-timer.git">pyqt-timer</a>