How to host correctly on github?

Question

JavaScript

Created a repository on github. I posted one of my libraries. New versions are added frequently.
I have several directories like: hello/v1.0/script.js, hello/v1.1/script.js
I decided to see how large companies place their libraries. For example jQuery. There are a bunch of directories: 'test,build,external.src' Then some more files, readme and more.
The question is why all this except license scripts and readme?

Answer 1

1. instead of /v1.0/ use git tags
2. test | tests | ... - usually this is a directory for autotests
3. build | release | ... are directories for compiled (release) files, the same jquery.min.js for example
4. external | Vendor | ... - directories with external dependencies of the current project
5. src | lib | ... - the code of the project itself
6. bin - directory with executable files for the project
7. var | tmp | ... - directory for temporary files
8. Makefile - configuration for the make console utility
9. bower.json - bower dependencies 10.
package.json - npm dependencies we take into account trivial ones for one and a half lines).