Add spider for djangocon.eu 2011-2014
Add Strata Conf speakers spider

Add conference name to Speaker item definition
Add 2006 us.pycon.org speakers
Support years from command line argument
Merge pull request #8 from scrapinghub/uspycon-2006

Add 2006 us.pycon.org speakers
Merge pull request #7 from scrapinghub/strataconf

Add Strata Conf speakers spider
Merge pull request #9 from tomwardill/djangoconeu

Add spider for djangocon.eu 2011-2014
Add pipeline to set conference value to spider name
Merge pull request #10 from rocioar/master

Add pipeline to set conference value to spider name
Merge pull request #11 from pgayane/master

spiders for Rocky Mountain Ruby conferences from 2010-2013