add comma

Author: brianc

package.json

@@ -14,7 +14,7 @@
  },
  "scripts" : { 
  "test" : "make test-all connectionString=pg://postgres@localhost:5432/postgres",
- "prepublish": "rm -r build || (exit 0)"
+ "prepublish": "rm -r build || (exit 0)",
  "install" : "node-gyp rebuild || (exit 0)"
  },
  "engines" : { "node": ">= 0.8.0" }