whoops, forgot mins_to_end_of_hour option
updated whats-new.rst and some related docs
Merge branch 'master' of github.com:Yelp/mrjob into whats_new_mrjob
proofread and fixed doc changes
a bit more improvement of doc language
linked to check_input_paths mrjob opt
use .. warning::
Merge pull request #761 from davidmarin/whats_new_mrjob

Whats new, mrjob?