Add missing information about the first example in README.md
Update hdfs.py

Minimum viable change to allow setting an override to HDFS tmp dir in luigi.
Clean up example: use context manager when opening files (already done elsewhere in the file), use  rather than %s, remove trailing spaces on a number of lines, break lines at under 80 characters
Merge pull request #269 from jeffknupp/master

Add missing information about the first example in README.md; clean up example code
Don't try to mail errors when missing config.
Barebones sphinx setup.

The index page isn't very exciting, yet.
Merge pull request #271 from jcrobak/dont-email-none

Don't try to mail errors when missing config.
Fix the top_artists example
Merge pull request #273 from rantav/top-artists-fix

Fix the top_artists example
Update documentation for luigi.task.
Update documentation for luigi.parameter.
Add sphinx documentation for the api.
Merge pull request #272 from jcrobak/sphinx

Sphinx docs
Merge branch 'master' of https://github.com/spotify/luigi
Merge pull request #277 from cannonpr/master

Update hdfs.py
Merge branch 'master' of https://github.com/spotify/luigi