Yasuharu Ozaki

Results 4 issues of Yasuharu Ozaki

If cache == ture, make cache when page was loaded. This makes it faster to render first(default) page.

Now, merge pull-request makes a commit like: ``` Merge pull request #8 from yasuoza/blahblah\n\nOriginal Pull Request Title ``` This commit fixes it to: ``` Merge pull request #8 from yasuoza/blahblah...

Git 2.0 set default push.default to simple. This commit enables gh to support simple push strategy. If there is no upstream branch, open master's branch.

Open pull-request url when `-o` or `-browse` option was passed. This is a porting patch from github/hub's `pull-request` command. FYI: https://github.com/github/hub/blob/master/lib/hub/commands.rb#L167-L168