DOC Fixed HTTPCACHE_STORAGE typo in the default value which is now Filesystem instead Dbm.
Merge pull request #571 from darkrho/httpcache-storage-doc

DOC Fixed HTTPCACHE_STORAGE typo in the default value which is now Files...
Fix tests for Travis-CI build
Merge pull request #570 from redapple/travistests

[MRG] Fix tests for Travis-CI build
Merge pull request #566 from redapple/offsite-stats

OffsiteMiddleware: add 2 stats counters
CrawSpider: support process_links as generator

Adding tests for CrawlSpider's process_links