Add IPython instructions to README.md

README.md

@@ -20,6 +20,41 @@ import better_exceptions
 
 That's it!
 
+### IPython
+
+If you are using IPython, you will need to register a startup hook for better_exceptions.
+
+Add this code to `$HOME/.ipython/profile_default/startup/00-better_exceptions.py`:
+
+```python
+from __future__ import print_function
+import better_exceptions, sys
+
+ip = get_ipython()
+old_show = ip.showtraceback
+
+def exception_thunk(exc_tuple=None, filename=None,
+                    tb_offset=None, exception_only=False):
+    print("Thunk: %r %r %r %r" % (exc_tuple, filename, tb_offset, exception_only),
+          file=sys.stderr)
+    notuple = False
+    if exc_tuple is None:
+        notuple = True
+        exc_tuple = sys.exc_info()
+    use_better = True
+    use_better = use_better and (filename is None)
+    use_better = use_better and (tb_offset is None)
+    use_better = use_better and (not exception_only)
+    use_better = use_better and (not isinstance(exc_tuple[0], SyntaxError))
+    if use_better:
+        return better_exceptions.excepthook(*exc_tuple)
+    else:
+        return old_show(None if notuple else exc_tuple,
+                        filename, tb_offset, exception_only)
+
+ip.showtraceback = exception_thunk
+```
+
 ### Advanced Usage
 
 If you want to allow the entirety of values to be outputted instead of being truncated to a certain amount of characters: