Updated URLS.txt

added my portfolio!
Hi I'm @skalnik :wave:
Update URLS.txt
Update URLS.txt

Adding my forthcoming homepage.
Merge branch 'patch-1' of github.com:skalnik/friends into skalnik-patch-1
Merge branch 'master' of github.com:jalcine/friends into jalcine-master

Conflicts:
	URLS.txt
Merge branch 'master' of github.com:andrewmaier/friends into andrewmaier-master

Conflicts:
	URLS.txt
Fixing merge conflict.