增加错误返回码说明
增加错误返回码说明

代码：
35.1:更新SDK,完善调试所需要的信息
35.2:优化规范代码，删除无用代码，增加log和注释
文档：
增加错误返回码说明
shangxianjing/appcan-docs-v2,sandy1108/appcan-docs-v2,sandy1108/appcan-docs-v2,AppCanOpenSource/appcan-docs-v2,pingping-jiang6141/appcan-docs-v2,pingping-jiang6141/appcan-docs-v2,shangxianjing/appcan-docs-v2,AppCanOpenSource/appcan-docs-v2,xurigan/appcan-docs-v2,shangxianjing/appcan-docs-v2,sandy1108/appcan-docs-v2,sandy1108/appcan-docs-v2,xurigan/appcan-docs-v2,AppCanOpenSource/appcan-docs-v2,shangxianjing/appcan-docs-v2,pingping-jiang6141/appcan-docs-v2,AppCanOpenSource/appcan-docs-v2,pingping-jiang6141/appcan-docs-v2