Add README

Author: lyndsysimon

python/README.md

@@ -0,0 +1,25 @@
+# sdk:python
+
+```python
+from pipedream import sdk as pd
+
+pd.send_event(API_KEY, {'hello': 'world'})
+
+# with exports
+pd.send_event(
+    API_KEY,
+    {'hello': 'world'},
+    exports={
+        'event': {'hello': 'world!'},
+        'other_export': 'howdy',
+    }
+)
+```
+
+If you do not provide an `event` export it will be set to the `raw_event`
+(first argument).  `event` and `raw_event` MUST be a dict or the SDK request
+will be invalid.
+
+## Development
+
+TODO