Add gist5707298 package.
Add gist5707298 package.

git-subtree-dir: gists/gist5707298
git-subtree-mainline: d50319c88bc73430503ca62896ffa8af78c0a341
git-subtree-split: d0da88fc5fad4e6aa85153deade178bdd84adf61

shurcooL/go