support stylus-lemonade plugin

[mikesmullin]

stylus-lemonade is my plugin. i am using it with stylus to generate css sprite images automatically. it is inspired by and closely follows the standard set in the Rails community ala Spriting with Compass/SASS formerly "Lemonade". of course people can always include this package manually but if you feel like spriting should be an out-of-the-box feature as it is with RoR, then plz consider linking it as a dependency (see attached commit)

thanks and best wishes

[mikesmullin]

fyi: it breaks the travis build because ubuntu needs a lib installed for the node-gd bindings to work. something about that would also need to be added to Tower installation process.

sudo apt-get install libgd2-xpm-dev # on ubuntu, for css image sprite processing

btw including the dependency is all we need for it to start working with Tower assuming this pull request (https://github.com/gruntjs/grunt-contrib-stylus/pull/6) for grunt-contrib-stylus is approved. i noticed mint.js is also capable of compiling stylus but doesn't seem to actually handle any of it in the Tower project; let me know if i am wrong about that assumption.

[thehydroimpulse]

@mikesmullin They'll be a dependency problem libgd2-xpm-dev being only for linux. Tower would need to work for all platforms.

[mikesmullin]

ya true i may have to do some cross-platform testing to find the install instructions for OS/X and Windows. FWIW the node-gd install instructions only list a dependency issue for Ubuntu, but it could be that that's all they've tested, as well. :/

[mikesmullin]

well people can add it easily enough with npm install stylus-lemonade --save if they want.