Add Docs spellchecking Test.

Not sure this is the best way to go, but it works. I'm not crazy about
running the spellcheck against the built docs, but aspell has a builtin
option to easily ignore everything in `<code>` tags which greatly simplfies
things.

I looked at Doug Hellmans' sphinxcontrib-spelling package which does
something similar for Sphinx. However, as Sphinx uses rST and the rST
parser outputs a parse tree, Doug is essentially taking that parse tree
and running the spellcheck on the appropriate parts (skipping code, etc.).
He did a nice [writeup][5] of his development process if you are interested.

As Python-Markdown's parse tree is represented as HTML (through ElementTree)
I would have to use HTML anyway. And [PyEnchant][2] doesn't currently have
good support for HTML. So I used [aspell][3], with inspiration from the
[git-spell-check][4] hook.

[1]: http://sphinxcontrib-spelling.readthedocs.org/en/latest/index.html
[2]: https://pythonhosted.org/pyenchant/
[3]: http://aspell.net/
[4]: https://github.com/mprpic/git-spell-check
[5]: http://doughellmann.com/2011/05/26/creating-a-spelling-checker-for-restructuredtext-documents.html

1 files changed, 5 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 9d62ff2..c4384a2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py32, py33, py34, pypy, flake8
+envlist = py27, py32, py33, py34, pypy, flake8, checkspelling
 
 [testenv]
 downloadcache = {toxworkdir}/cache
@@ -11,5 +11,9 @@ commands = coverage run --source=markdown {toxinidir}/run-tests.py {posargs}
 deps = flake8
 commands = flake8 {toxinidir}/markdown {toxinidir}/tests {toxinidir}/setup.py {toxinidir}/run-tests.py
 
+[testenv:checkspelling]
+deps =
+commands = {toxinidir}/checkspelling.sh
+
 [flake8]
 max-line-length = 119
\ No newline at end of file