Update jszip dependency

Author: newmanw

package.json

@@ -30,7 +30,7 @@
     "jade": "^1.11.0",
     "json2csv": "^2.2.1",
     "json2csv-stream": "0.1.2",
-    "jszip": "https://github.com/tmcw/jszip/archive/patch-1.tar.gz",
+    "jszip": "2.5.0",
     "method-override": "1.0.x",
     "migrate": "0.1.6",
     "moment": "2.1.0",
@@ -44,7 +44,6 @@
     "passport-http-bearer": "0.2.x",
     "passport-local": "1.0.0",
     "request": "2.51.x",
-    "shp-write": "~0.1.5",
     "terraformer": "1.0.4",
     "terraformer-arcgis-parser": "1.0.4",
     "togeojson": "~0.3.0",