From: Brian Candler <b.candler@...>
Date: 2011-08-05T16:36:39+09:00
Subject: Re: Print which all gems are used by the script

You can make this dependency explicit by using Bundler. You create a 
single file which specifies the gems you use and the version 
requirements, and bundler gives you tools for installing those gems on 
the target system.

This maybe overkill for you right now, but it solves the problems of 
having gems with conflicting inter-dependencies, and how to ensure that 
when you install an application on a target system you get *exactly* the 
same versions of gems that you developed and tested with.

Google "ruby bundler" for more info.

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