Readme: add usage examples

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>

README.md

@@ -15,6 +15,11 @@ Switch voice routing via alsactl according to current primary sound device
   ```
 4) Reboot
 
+## Usage:
+See config sample in examples dir
+```
+CONFIG=/path/to/config callpipe
+```
 
 Project TODO:
   - [ ] Write proof of concept

examples/rules.json

@@ -0,0 +1,44 @@
+[
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Speaker:[Out] Speaker",
+    "control": "QUAT_MI2S_RX Voice Mixer VoiceMMode1",
+    "value": "1",
+    "value_type": "bool"
+  },
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Earpiece:[Out] Earpiece1",
+    "control": "SLIMBUS_0_RX Voice Mixer VoiceMMode1",
+    "value": "1",
+    "value_type": "bool"
+  },
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Headphones:[Out] Headphones",
+    "control": "SLIMBUS_1_RX Voice Mixer VoiceMMode1",
+    "value": "1",
+    "value_type": "bool"
+  },
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Top Microphone:[In] Mic2",
+    "control": "VoiceMMode1 Capture Mixer SLIMBUS_1_TX",
+    "value": "1",
+    "value_type": "bool"
+  },
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Bottom Microphone:[In] Mic1",
+    "control": "VoiceMMode1 Capture Mixer SLIMBUS_0_TX",
+    "value": "1",
+    "value_type": "bool"
+  },
+  {
+    "action": "CallPipeLogicRuleAlsa",
+    "target": "Built-in Audio Headset Microphone:[In] Headset",
+    "control": "VoiceMMode1 Capture Mixer SLIMBUS_2_TX",
+    "value": "1",
+    "value_type": "bool"
+  }
+]