Removed Unsplash

Removed Unsplash in order to keep everything simple. (Also the load times were too god damn high)

config.sample.json

@@ -1,10 +1,5 @@
 {
 	"title" : "Your Homepage Title",
-	"credits" : true,
-	"custom_url" : "",
-	"custom_url_selector" : "",
-	"custom_url_headers" : [],
-	"unsplash_client_id" : "Make yourself an Unsplash Account here: https://unsplash.com/developers (Leave blank for Trianglify)",
 	"items" : [
 		{
 			"alt" : "Github",