Update description and logo of the DiffSharp library.
Fix link for F# mode for Emacs
Merge pull request #349 from gbaydin/gh-pages

Update description and logo of the DiffSharp library.
Merge pull request #351 from alfonsogarciacaro/gh-pages

Fix link for F# mode for Emacs in Cross-Platform guide
Merge pull request #352 from ovatsus/gh-pages

Add HTML Type provider to F# Data type providers list
Massive logo update on "F# Community Projects" page
Update index.html
Update default.html
S3 logo updated
Merge pull request #350 from sergey-tihon/gh-pages

Massive logo update on "F# Community Projects" page & related pages
Small fixes on community projects page
Merge pull request #353 from sergey-tihon/gh-pages

Small fixes on community projects page
Update index.md
Update F# Data description