Update de_DE.lang

UPDATE!
Update README.md
Merge pull request #8 from Vexatos/patch-1

Update de_DE.lang
Fixed gliders both client and server-side now. Players are horizontal while flying, however we could do with pushing them back a bit (well, rendering the glider further forward), and probably stick a bar or something in there to make them look like they're holding something
Merge branch 'master' of github.com:OpenMods/OpenBlocks