Update docs to define include and exclude filters

Author: vanstee

lib/ex_unit/lib/ex_unit.ex

@@ -145,7 +145,9 @@ defmodule ExUnit do
 
   * `:autorun` - If ExUnit should run by default on exit, defaults to `true`;
 
-  * `:filter` - Constrain which tests are run by matching against a keyword list of tags;
+  * `:include` - Specify which tests are run by skipping tests that do not match the filter
+
+  * `:exclude` - Specify which tests are run by skipping tests that match the filter
   """
   def configure(options) do
     Enum.each options, fn { k, v } ->

lib/mix/lib/mix/tasks/test.ex

@@ -49,7 +49,8 @@ defmodule Mix.Tasks.Test do
   * `--no-compile` - do not compile, even if files require compilation
   * `--no-start` - do not start applications after compilation
   * `--no-color` - disable color in the output
-  * `--filter` - skip tests that don't have matching tags
+  * `--include` - skip tests that do not match the filter
+  * `--exclude` - skip tests that match the filter
 
   ## Configuration