Update docs.
Update README
Fix some issues;
Add audience payload;
Add thanks;
ReadMe page edit;
Add audience test sample;
Remove useless files;
Merge README file;
Rename README file;
Add user-defined http header;
Modify sample document;
Modify function detail doc;
Modify HTTP headers;
Release v3.0.1 - Bugfix
Add options set example;
To use README file for building
To use travis for building
Update README.rst
Update README.rst