[#7] Gems installed and 4/6 share buttons added
[#7] Default post image added
[#7] Meta tags added with helper
Merge branch 'feature/6_blog_post_comments' into feature/7_share_posts
[#7] Heroku requiered gem added
[#7] Fixed meta tags
Merge branch 'feature/7_share_posts' of https://github.com/savayg/buzzstarter-training into feature/7_share_posts
[#7] No need for heroku stuff on this branch
[#7] Updated gem to support linkedin and blogger
[#7] Thumb generation corrected
[#7] Syntax error corrected
[#7] Add blog image in pages
Merge branch 'master' into feature/7_share_posts
[#7] Upload images per-post
Merge branch 'feature/7_share_posts' of https://github.com/savayg/buzzstarter-training into feature/7_share_posts

Conflicts:
	app/views/landing/post.html.erb
[#7] Translation and image bugfix
[#7] Switched about box position
[#7] Share bugfix
[#7] PR comments solved
[#7] Bugfix