Looks useful and is much needed. However, since you are trying to appeal to newcomers to rails, which might include non-devs as well, you need to state what the

Looks useful and is much needed. However, since you are trying to appeal to newcomers to rails, which might include non-devs as well, you need to state what the purpose is in more plain english (and in larger text). For example, what is a dependency? A better line might be, "...without the difficulty of having to install each necessary component individually." Or something along those lines. Good Luck