Merge pull request #31 from vido89/master

Translation for Serbian
Update README.md

Translators should always do a merge to sync from the main to their fork, BEFORE opening a pull back request from their fork to the main.
Correction on "upload"
Merge pull request #32 from PtiLuky/master

Correction
Small fixes in translation
Merge pull request #33 from cerfribar/master

small fix on german translation
Merge pull request #1 from poifox/master

Update