Update cube-icon: add CSS brightness filters to enhance 3D appearance

deathcap/cube-icon@eeb123395abc456796d6cb6876a1ca55d36a6431 Add CSS filter effects brightness for simulated lighting, enhances 3D appearance. Closes GH-1
deathcap/cube-icon@a4a70abb49f033f03c3299747e4a242c7091ce58 Update to CoffeeScript 1.7.0
deathcap/cube-icon@161f792d5b4b8cd1a97c481cb4ecb78462caf68d Add opts.image array-based texture option, matches voxel-texture side/index convention
deathcap/cube-icon@bb6a9f5915b2b695e7138b7542f27007f3f883d9 Tweak for border removal
deathcap/cube-icon@05b5b467a02500c828e986281741a2df9692edc6 Remove width/height from container - excessive and extraneous
deathcap/cube-icon@4c9de5ae621697ff8faea7ec2fec55c360fff1d8 Add description
deathcap/cube-icon@9a70b0af23a3798d07580ba17ee769a8cb4a89d9 Remove face side debug text
deathcap/cube-icon@7fedc43deb7a6fff33c8e02c439a95673d801f43 Move demo to separate file

Commit message generated by https://github.com/deathcap/lmno-cl
Update to CoffeeScript 1.7.0
Update to cube-icon ~0.1.0
0.2.0