Package extends Meteor.collection.prototype by incorrect monkey-patching (conflicting with meteor-job-collection)

[SimonSimCity]

Strongly related to #246 ...

I tried to install this extension together with the package simonsimcity:job-collection (a fork of the package by vsivsi which is compatible with Meteor 1.6.1+) but got the following error:

The global definition of Mongo.Collection has been patched by another package, and the prototype constructor has been left in an inconsistent state. Please see this link for a workaround: vsivsi/meteor-file-sample-app#2 (comment)

This error is thrown because Mongo.Collection is not equal to Mongo.Collection.prototype.constructor when initializing the job-collection (https://github.com/SimonSimCity/meteor-job-collection/blob/master/packages/job-collection/src/shared.js#L208)

Please also take a look at https://github.com/rclai/meteor-collection-extensions which could provide a more collective way of extending the Mongo.Collection class.