added note on OO interface

README.md

@@ -15,7 +15,7 @@ A manager/runner of scripts:
 
 A trivially easy to use softIOC:
 
-- Uses `pcaspy` (in a slightly unintended way).
+- Uses [`pcaspy`](https://github.com/paulscherrerinstitute/pcaspy/) (in a slightly unintended way).
 - `serve` (output) PVs and `host` (input) PVs:
 
 ```python
@@ -41,3 +41,23 @@ with MorIOC("mtest") as mor:
 
 - PV's data type is inferred from the value.
 - Currently supports Python scalars (int, float, str), sequences (lists, tuples, etc.) as well as numpy arrays and scalars.
+
+- Alternatively, an object-oriented interface exists:
+
+```python
+with MorIOC("mtest") as mor:
+    pvo = mor.PV("chan-PV-out") # creates MTEST:CHAN-PV-OUT
+    pvi = mor.PV("chan-PV-in")  # creates MTEST:CHAN-PV-IN
+    img = mor.Image("chan-Image")
+    # creates MTEST:CHAN-IMAGE:FPICTURE, :WIDTH, :HEIGHT
+
+    while True:
+            val = random()
+            pvo.put(val)
+
+            val = pvi.get()
+            print(val)
+
+            val = np.random.random(200).reshape(10, 20)
+            img.put(val)
+```