Bump stylus to 0.42.0

Closes gh-79.
v0.12.0
Emphasize spaces in object keys
Build README
Merge pull request #83 from thejameskyle/master

Emphasize spaces in object keys
Use chalk module to colorize terminal output
Merge pull request #78 from radkodinev/colorized-output-with-chalk

Use chalk module to colorize terminal output