Update cs.md

fix mistyped Mozilla name
Fixing Mozzila typo
Merge pull request #197 from pdehaan/issue-196

Fixing Mozzila typo
Merge pull request #195 from MikkCZ/patch-1

Update cs.md
Tweaking dates to fix markdowning
Merge pull request #199 from pdehaan/issue-198

Tweaking dates to fix markdowning
Add FMD section
Add FMD section
Create en-US.md

Converting from PDF to Github.md
Merge pull request #200 from peiying2/patch-72

Create en-US.md
dumbing down the quotes
Merge pull request #201 from pdehaan/dumbquotes

dumbing down the quotes