Update 'README.md'

README.md

@@ -1,3 +1,21 @@
 # kivy
 
-UI框架
+UI框架
+
+## Develop
+
+```
+# pip install kivy
+
+from kivy.app import App
+from kivy.uix.label import Label
+
+class MyApp(App):
+    def build(self):
+        return Label(text= "hello world")
+
+
+if __name__=='__main__':
+    MyApp().run()
+
+```