Add doc8 documentation style checking

- add dev dependency
- add doc8 to tasks.py
- fix all doc8 errors

1 files changed, 6 insertions, 6 deletions

diff --git a/docs/migrating/why.rst b/docs/migrating/why.rst
index d1121128..71017d89 100644
--- a/docs/migrating/why.rst
+++ b/docs/migrating/why.rst
@@ -6,13 +6,13 @@ Why Migrate to cmd2
 ``cmd2`` is an extension of cmd_, the Python Standard Library's module for
 creating simple interactive command-line applications.
 
-``cmd2`` can be used as a drop-in replacement for cmd_.  Simply importing ``cmd2``
-in place of cmd_ will add many features to an application without any further
-modifications.
+``cmd2`` can be used as a drop-in replacement for cmd_.  Simply importing
+``cmd2`` in place of cmd_ will add many features to an application without any
+further modifications.
 
-Understanding the use of cmd_ is the first step in learning the use of ``cmd2``.
-Once you have read the cmd_ docs, return here to learn the ways that ``cmd2``
-differs from cmd_.
+Understanding the use of cmd_ is the first step in learning the use of
+``cmd2``. Once you have read the cmd_ docs, return here to learn the ways that
+``cmd2`` differs from cmd_.
 
 
 Describe why you would want to migrate, and the benefits of doing so