add tests
update .travis.yml
update .travis.yml
fix cover tool install fail on go tip

the code.google.com/p/go.tools/cmd/cover command has moved; use
golang.org/x/tools/cmd/cover instead.
update tests
增加 pinyin 命令行工具
update .travis.yml
.travis.yml不能有中文
Merge branch 'develop'

Conflicts:
	README.md