Update requirements.txt

Miss WTForms
Merge pull request #1 from lowstz/patch-1

Update requirements.txt
Improving README file
Changed setting cookie secret
Building form for comments
Register comments
Listing comments on bottom of post
Fix redirect after submit new post and edit post
Validating slug post
Adding support for disqus widget
Showing a message on post without comments
Enabled feature for comments deletion
Enabled feature for likes to comments
Enabled feature for dislikes to comments
Adding support for Twitter button share on post
Adding support for Facebook share button on post
Minor changes on social buttons
Added CommentsModule for separating comments logic
Adding twitter bootstrap
First changes at templates