Complete doc for func 'Main'.
Complete doc for func 'RunBechmarks', 'RunExamples' and 'RunTests'.
Complete doc for func 'Short'.
Improve doc for func 'Main'.
Complete doc for struct 'B' & its methods.
Complete doc for struct 'Benchmark', 'InternalBechmark', 'InternalExample', 'InternalTest', and struct 'BenchmarkResult' & its methods.
Complete doc for struct 'T' & its methods.
Add link for func list.
Merge pull request #151 from hyper-carrot/master

testing包函数示例完成！