Implement headless rendering
Merge pull request #44 from tomaka/headless-rendering

Implement headless rendering
Minor changes in travis.yml
Update for rustc f9fc49c06 2014-10-10 00:07:08 +0000
Merge pull request #49 from tomaka/update-rustc

Update for rustc f9fc49c06 2014-10-10 00:07:08 +0000
Change implementations import system