Add node example errors to crate documentation

Author: kylejlin

README.md

@@ -15,12 +15,20 @@ message.
 
 Without `console_error_panic_hook` you just get something like *RuntimeError: Unreachable executed*
 
+Browser:
 ![Console without panic hook](without_panic_hook.png)
 
+Node:
+![Node console without panic hook](without_panic_hook_node.png)
+
 With this panic hook installed you will see the panic message
 
+Browser:
 ![Console with panic hook set up](with_panic_hook.png)
 
+Node:
+![Node console with panic hook set up](with_panic_hook_node.png)
+
 ### Usage
 
 There are two ways to install this panic hook.

src/lib.rs

@@ -15,12 +15,20 @@
 //!
 //! Without `console_error_panic_hook` you just get something like *RuntimeError: Unreachable executed*
 //!
+//! Browser:
 //! ![Console without panic hook](without_panic_hook.png)
 //!
+//! Node:
+//! ![Node console without panic hook](without_panic_hook_node.png)
+//!
 //! With this panic hook installed you will see the panic message
 //!
+//! Browser:
 //! ![Console with panic hook set up](with_panic_hook.png)
 //!
+//! Node:
+//! ![Node console with panic hook set up](with_panic_hook_node.png)
+//!
 //! ## Usage
 //!
 //! There are two ways to install this panic hook.