rename drop to tether-drop to adhere to npm registry

tether-drop/tether-drop-tests.ts

@@ -1,5 +1,7 @@
 ///<reference path="../tether/tether.d.ts" />
-///<reference path="drop.d.ts" />
+///<reference path="tether-drop.d.ts" />
+
+import 'tether-drop';
 
 var yellowBox = document.querySelector(".yellow");
 var greenBox = document.querySelector(".green");

tether-drop/tether-drop.d.ts

@@ -56,6 +56,6 @@ declare namespace Drop {
     }
 }
 
-declare module "drop" {
+declare module "tether-drop" {
     export = Drop;
 }