Added script that loads participants dynamically. Needs code review.

scripts/load_cg_participants.js

@@ -0,0 +1,37 @@
+//This script dynamically loads the participants of the CG and shows them in the spec. 
+(function requestParticipants(){
+  var xhr = new XMLHttpRequest(),
+  	  output = document.querySelector("#participants"), 
+      participantsURL = output.querySelector("a").getAttribute("href"),
+	  tempElem = document.createElement("temp"), 
+	  participants;
+  if(!participantsURL){
+	return;  
+  }
+  xhr.open("GET", participantsURL,true);
+  xhr.onreadystatechange= processParticipants; 
+  xhr.send(null); 
+
+  function processParticipants(){
+	 if (xhr.readyState==4) {
+		//participants are in a table on the other website
+		tempElem.innerHTML = xhr.responseText;
+		participants = tempElem.querySelectorAll("td > h3");
+		if(participants.length > 0){
+ 	  		showParticipants(participants)
+		}
+ 	}
+  } 
+
+  function showParticipants(){
+	var names  = [],
+		prefix = "Participants of the Responsive Images Community Group are: ";
+	if(participants.length){
+		for(var i = 0; i < participants.length; i++){
+			names.push(participants.item(i).textContent);
+		}
+		output.innerHTML = prefix + names.join(", ") + "."; 
+	}
+  }
+ }()); 
+