* docs: make english README the repository's default README
some people might be scared off by a base README being in Chinese, so using a more universally known language like English seems to be more suited for open-source projects. i believe some people just come to the project, see the README and then they're frightened to even work on/with it
this is a change curated by the #33 issue
* docs: use MIT badge directly instead of relying on the repo link
* docs: make READMEs grab the license badge directly via repo's specified license
* docs: remove most HTML from markdown
using HTML in markdown is not a good practice in general, however some things that exist in HTML do not yet exist in markdown, such as centering a sector of text; therefore `<div align="center"></div>` can not be removed without altering the looks of the README.
* docs(translation): replace as much HTML in markdown files as possible for all translated READMEs under `docs/`
* docs(translation): update all req files mentioned in translated READMEs under `docs/` dir
