added ORM operations to README

Author: dantownsend

README.md

@@ -18,6 +18,8 @@ Some of it’s stand out features are:
 
 The syntax is clean and expressive.
 
+You can use it as a query builder:
+
 ```python
 # Select:
 await Band.select(
@@ -43,6 +45,22 @@ await Band.update({Band.members: 5}).where(
 ).run()
 ```
 
+Or like a typical ORM:
+
+```python
+# To create a new object:
+b = Band(name='C-Sharps', popularity=100)
+await b.save().run()
+
+# To fetch an object from the database, and update it:
+b = await Band.objects().where(Band.name == 'Pythonistas').first().run()
+b.popularity = 10000
+await b.save().run()
+
+# To delete:
+await b.remove().run()
+```
+
 ## Installation
 
 ```

piccolo/apps/playground/commands/run.py

@@ -157,12 +157,20 @@ def run(
         print(_table._table_str(abbreviated=True))
         print("\n")
 
-    print("Try out some queries:\n")
+    print("Try it as a query builder:")
     print("Band.select().run_sync()")
-    print("Band.objects().run_sync()")
     print("Band.select(Band.name).run_sync()")
     print("Band.select(Band.name, Band.manager.name).run_sync()")
     print("\n")
 
+    print("Try it as an ORM:")
+    print(
+        "b = Band.objects().where(Band.name == 'Pythonistas').first()."
+        "run_sync()"
+    )
+    print("b.popularity = 10000")
+    print("b.save().run_sync()")
+    print("\n")
+
     populate()
     IPython.embed()