compress.sh now depends on iconv, so lets add it to package.json

package.json

@@ -14,6 +14,7 @@
         "connect-logger-statsd": "0.0.1",
         "ejs": "0.4.3",
         "express": "2.5.0",
+        "iconv": "1.1.3",
         "jwcrypto": "0.1.1",
         "mustache": "0.3.1-dev",
         "mysql": "0.9.5",