Fix docs for JS run, and add collect to docs

[ptrln]

When running in node

r.table('example').run(function(thing){
    console.log(thing);
});

Only one "thing" will be returned, even though there are multiple in the table. When running in the console using runp(), an array of all the records are returned, which is correct. But when using run(), only one record is returned.

[coffeemug]

@ptrln -- this is by design, it's a way to use 'cursors' in node. If the callback returns true, it gets called again with the next record. If it returns nothing/false, it doesn't get called again (rethink assumes you don't want the rest of the records). An alternative is to call 'collect' instead of run, which will give you the whole dataset.

@wmrowan -- could you please improve the docs on this, and add 'collect' to the js docs?

[ptrln]

@coffeemug , Thanks! I thought it might be something like that. Do you mean something like r.table('example').collect()? I tried running collect, and I got this error - TypeError: Object [object Function] has no method 'collect'

[coffeemug]

Hmm, perhaps collect isn't exposed -- @wmrowan could you chime in?

Regardless, you'd need to pass collect a callback, which gets called with an array of documents.

[coffeemug]

ahh, checked the code, I believe it's query.run().collect(callback)

[coffeemug]

Renaming the issue -- this is a documentation problem.