doc: add prompt to fix repl_test.js example
Running repl.start without the prompt set produces this error: repl.js:95 throw new Error('An options Object, or a prompt String are required'); ^ Error: An options Object, or a prompt String are required at new REPLServer (repl.js:95:11) at Object.exports.start (repl.js:321:14) at Object.<anonymous> (/Users/dan/Dropbox/Documents/dev/nextgen/repl_test.js:5:6) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.runMain (module.js:492:10) at process.startup.processNextTick.process._tickCallback (node.js:244:9)
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@ -159,7 +159,7 @@ associated with each `REPLServer`. For example:
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var repl = require("repl"),
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msg = "message";
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repl.start().context.m = msg;
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repl.start("> ").context.m = msg;
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Things in the `context` object appear as local within the REPL:
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