"date-time" format is not validated

[davepacheco]

Here's a test program:

/*
 * test case for json-schema validation issue with date-time formats
 */

var jsonschema = require('json-schema');
var schema = {
    'type': 'string',
    'format': 'date-time'
};

console.log(jsonschema.validate('asdf', schema));

Here's the output on my system:

dap@sharptooth jst $ uname -a
Darwin sharptooth.local 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64
dap@sharptooth jst $ node -v
v0.10.18
dap@sharptooth jst $ npm ls
/Users/dap/Desktop/jst
└── json-schema@0.2.2

dap@sharptooth jst $ node issue-datetime.js 
{ valid: true, errors: [] }