Update README.md

Fixed typo
Merge pull request #65 from z1c0/patch-1

Update README.md
Added comment moderation
Merge pull request #67 from mwiedemeyer/master

Added comment moderation as proposed in issue #62
Updating NuGet packages
Added XSRF check
Changed serious to series

In the sample blog post about the Chrome Extension, the word serious has
been changed to series.
Added basic robot spam protection
Changed calculation of unique id
Merge pull request #68 from kewlniss/series

Changed serious to series
Changed datetime format. Fixed #59
Simplified the code
Optimized image
Fixed email link actions
Fixed issue with only one post
Simplified the code
Code cleanup
Minor tweaks
Added XSRF check to posts and comments
Fixed Bootstrap forms