update readme

README.md

@@ -7,4 +7,21 @@ Installation from cmd line
 git clone https://github.com/WaylonWalker/stodle.git
 cd ./stodle
 python setup.py install
+```
+
+Usage
+
+```
+from stodle import stop_idle()
+import time
+
+def really_long_function()
+    """
+    needs to run without windows going into screensaver
+    """
+
+    for i in range(1000
+        time.sleep(100)
+        stop_idle()
+
 ```