Update package json file

package.json

 {
   "name": "medsurf-draw",
   "version": "1.0.1",
-  "description": "medsurf-draw",
-  "homepage": "https://www.iml.unibe.ch",
+  "description": "Draw annotations on jpg/zoomify images, based on PIXI.js",
+  "keywords": ["draw", "annotations", "pixi", "deepzoom", "zoomify", "marker"],
+  "homepage": "https://iml.unibe.ch",
+  "repository": {
+    "type" : "git",
+    "url" : "https://git-repo.iml.unibe.ch/iml-open-source/medsurf-draw.git"
+  },
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "scripts": {