Syalized Parts of the main layout and made main page display first 10 global posts
Merge pull request #26 from alexcodreanu86/tags

Tags
Merge pull request #27 from alexcodreanu86/navigation

Syalized Parts of the main layout and made main page display first 10 gl...
updated gemfile to include specific version of sprokets
added posts to the bottom of individual posts pages and tag controller/routes.
acutally added tag controller this time.
added page where user can see a list of all the tags with links to tags show pages.
implemented a page where user can see all posts associated with one tag and then click on tag name to go to post.