Updated post form for image field, fixed topic to use thumb sized image
made comments only depend on post and comment
added rspec, post_spec and vote_spec
fixed vote values
changing vote value again
fixing rspec test
fixed typo
fixed a typo in warning
Merge pull request #4 from tienyuan/shallow-nesting

shallow nesting: comments only depend on post and comment
Merge pull request #3 from tienyuan/add-image-to-postform

Updated post form for image field, fixed topic to use thumb sized image
Merge branch 'master' of github.com:tienyuan/bloccit into moderating-dryly
fixed arguments error