adds README

README.md

@@ -0,0 +1,70 @@
+ZX Sensor driver for Android Things
+===================================
+
+This driver supports ZXSensor peripherals using the I2C and UART protocols.
+
+See the [/library](/library) module for the implementation
+
+See the [/demo](/demo) module for a working example
+
+How to use the driver
+---------------------
+
+### Gradle dependency
+
+To use the `zxsensor` driver, simply add the line below to your project's `build.gradle`,
+where `<version>` matches the last version of the driver available on [jcenter][jcenter].
+
+```
+dependencies {
+    compile 'com.blundell:driver-zxsensor:<version>'
+}
+```
+
+### Sample usage
+
+```java
+import com.blundell.zxsensor.ZxSensor;
+import com.blundell.zxsensor.ZxSensorUart;
+
+// Access the ZXSensor (choose I2C or UART) here we show UART:
+
+ZxSensorUart zxSensorUart;
+
+try {
+    zxSensorUart = ZxSensor.Factory.openViaUart(BoardDefaults.getUartPin());
+} catch (IOException e) {
+    throw new IllegalStateException("Can't open, did you use the correct pin name?", e);
+}
+zxSensorUart.setSwipeLeftListener(swipeLeftListener);
+zxSensorUart.setSwipeRightListener(swipeRightListener);
+
+ZxSensor.SwipeLeftListener swipeLeftListener = new ZxSensor.SwipeLeftListener() {
+        @Override
+        public void onSwipeLeft(int speed) {
+            Log.d("TUT", "Swipe left detected");
+        }
+    };
+
+ZxSensor.SwipeRightListener swipeRightListener = new ZxSensor.SwipeRightListener() {
+        @Override
+        public void onSwipeRight(int speed) {
+            Log.d("TUT", "Swipe right detected");
+        }
+    };
+
+// Start monitoring:
+
+zxSensorUart.startMonitoringGestures();
+
+// Stop monitoring:
+
+zxSensorUart.stopMonitoringGestures();
+
+// Close the ZXSensor when finished:
+
+zxSensorUart.close();
+```
+
+
+[jcenter]: https://bintray.com/blundell/maven/driver-zxsensor/_latestVersion