Updated README to refelct name change to ros2_numpy

Author: tpanzarella

README.md

@@ -1,13 +1,15 @@
-# ros_numpy
-Tools for converting ROS messages to and from numpy arrays. Contains two functions:
+# ros2_numpy
+This project is a fork of [ros_numpy](https://github.com/eric-wieser/ros_numpy)
+to work with ROS 2. It provides tools for converting ROS messages to and from
+numpy arrays. Contains two functions:
 
 * `arr = numpify(msg, ...)` - try to get a numpy object from a message
 * `msg = msgify(MessageType, arr, ...)` - try and convert a numpy object to a message
 
 Currently supports:
 
 * `sensor_msgs.msg.PointCloud2` ↔ structured `np.array`:
-   
+
    ```python
    data = np.zeros(100, dtype=[
      ('x', np.float32),
@@ -17,12 +19,12 @@ Currently supports:
    data['x'] = np.arange(100)
    data['y'] = data['x']*2
    data['vectors'] = np.arange(100)[:,np.newaxis]
-   
-   msg = ros_numpy.msgify(PointCloud2, data)
+
+   msg = ros2_numpy.msgify(PointCloud2, data)
    ```
-   
+
    ```
-   data = ros_numpy.numpify(msg)
+   data = ros2_numpy.numpify(msg)
    ```
 
 * `sensor_msgs.msg.Image` ↔ 2/3-D `np.array`, similar to the function of `cv_bridge`, but without the dependency on `cv2`
@@ -36,11 +38,11 @@ Currently supports:
 Support for more types can be added with:
 
 ```python
-@ros_numpy.converts_to_numpy(SomeMessageClass)
+@ros2_numpy.converts_to_numpy(SomeMessageClass)
 def convert(my_msg):
     return np.array(...)
 
-@ros_numpy.converts_from_numpy(SomeMessageClass)
+@ros2_numpy.converts_from_numpy(SomeMessageClass)
 def convert(my_array):
     return SomeMessageClass(...)
 ```