Update runner README and improve Python 2 support

runner/README.md

@@ -1,3 +1,29 @@
 # Precise Wrapper
 
-A simple to use 
+A simple to use, lightweight Python module for using Mycroft Precise.
+
+## Usage:
+
+First, download the precise binary from [the precise-data repo][precise-data].
+Next, extract the tar to the folder of your choice. The following commands will
+work for a desktop:
+
+[precise-data]: https://github.com/mycroftai/precise-data/tree/dist
+
+```bash
+ARCH=x86_64
+wget https://github.com/MycroftAI/precise-data/raw/dist/$ARCH/precise-engine.tar.gz
+tar xvf precise-engine.tar.gz
+```
+
+Finally, you can create a program as follows, passing in the location of
+the executable as the first argument:
+
+```python
+#!/usr/bin/env python3
+
+from precise_runner import PreciseEngine, PreciseRunner
+
+engine = PreciseEngine('precise-engine/precise-engine', 'my_model_file.pb')
+runner = PreciseRunner(engine, on_activation=lambda: print('hello'))
+```

runner/precise_runner/runner.py

@@ -71,7 +71,7 @@ class ListenerEngine(Engine):
         self.get_prediction = listener.update
 
 
-class ReadWriteStream:
+class ReadWriteStream(object):
     """Class used to support writing binary audio data at any pace"""
     def __init__(self, s=b''):
         self.buffer = s
@@ -92,7 +92,7 @@ class ReadWriteStream:
         self.write_event.set()
 
 
-class PreciseRunner:
+class PreciseRunner(object):
     """
     Wrapper to use Precise. Example:
     >>> def on_act():