Add a new class.

This is a test class.
Add function

Add function "TestFun1"
Add new method

Add method "ThirdMethod"
Add description

Add description
Modify

Modify
Merge remote-tracking branch 'upstream/master'
Add method "TestFunForLq"
Merge pull request #2 from liqiangtq/master

Add Method "TestFunForLq"