middleman/middleman-guides — pull request #325 by dg-vrnetze (2014-07-25 20:47:45+00:00)
Title: Use configure :build to prevent weird errors

I got some weird errors if I do not "guard" the use of `sprockets`-method by using a `configure`-block.

Otherwise I got `method "sprockets" not found`-errors when running a `middleman`-cli-command. Therefor I added this tip as well.