can: Rename blocking methods

The blocking traits borrowed the naming convention from socketcan.
Rename the methods to `transmit()` and `receive()` to make them
consistent with the `nb` traits.

Author: timokroeger

src/can/blocking.rs

@@ -10,8 +10,8 @@ pub trait Can {
 
     /// Puts a frame in the transmit buffer. Blocks until space is available in
     /// the transmit buffer.
-    fn write(&mut self, frame: &Self::Frame) -> Result<(), Self::Error>;
+    fn transmit(&mut self, frame: &Self::Frame) -> Result<(), Self::Error>;
 
     /// Blocks until a frame was received or an error occured.
-    fn read(&mut self) -> Result<Self::Frame, Self::Error>;
+    fn receive(&mut self) -> Result<Self::Frame, Self::Error>;
 }