Update de.yml

Some small corrections and additions.
Update pl.yml

Update pl.yml

Update Readme.markdown
Merge branch 'patch-1' of https://github.com/radex/roon-i18n into radex-patch-1

Conflicts:
	Readme.markdown
Merge branch 'radex-patch-1'
Update de.yml

Added 'like'.
Add rake task to find missing translations
Remove comments and update readme
Merge branch 'patch-1' of https://github.com/benjaminfritz/roon-i18n into benjaminfritz-patch-1

Conflicts:
	web/de.yml
Update readme
Added sr-* translations
Merge branch 'sr' of https://github.com/ZDroid/roon-i18n into ZDroid-sr

Conflicts:
	Readme.markdown
Update readme
Add `dont_share`
Add quotes to `title_by_author`

I looked at http://www.apple.com/ios/ios7/features/ in various languages to see which characters they use in each language. Hopefully these are all correct.
Update sr
Update sr-Latn
Merge pull request #20 from ZDroid/patch-1

Update Serbian translations