Documentation and Release of SDHI SMS v4.0.0

[sumghai]

Imgur

• Update brochure album

General

• Update release notes in SDHI_SMS_README.txt

CurseForge

• Upload zip file of release
• Update project description
• Update image thumbnail
• Update image gallery

GitHub

• Upload zip file of release
• Update tutorial
• Update release notes on wiki
• Update README.md

KSP Forums

• Update release thread OP
• Update forums signature

[sumghai]

And we're done here :)