Made jison a dev dependency

Author: Thomas Bell

package.json

@@ -7,11 +7,11 @@
   "homepage": "http://codef0rmer.github.io/angular-dragdrop",
   "main": "src/angular-dragdrop.js",
   "dependencies": {
-  	"jison":"*"
   },
   "devDependencies": {
     "grunt": "~0.4.1",
-    "grunt-karma": "~0.4.4"
+    "grunt-karma": "~0.4.4",
+  	"jison":"*"
   },
   "scripts": {},
   "repository": {