chore: add badge (DimensionDev#4145)

README.md

@@ -11,6 +11,7 @@
 [![Chrome Web Store][badge-chrome]][client-chrome]
 [![Mozilla Add-on][badge-firefox]][client-firefox]
 [![FOSSA Status][badge-fossa]][fossa]
+[![Crowdin][badge-crowdin]][crowdin]
 
 Mask Network (originally named as Maskbook) is a portal to the new, open internet.
 With Mask Network, you can send encrypted posts to your friends,
@@ -55,6 +56,7 @@ Help us by donating us:
 
 [badge-chrome]: https://img.shields.io/chrome-web-store/v/jkoeaghipilijlahjplgbfiocjhldnap.svg?logo=Maskbook&logoColor=%231c68f3&style=flat-square&label=Chrome%20store
 [badge-ci]: https://img.shields.io/circleci/project/github/DimensionDev/Maskbook.svg?style=flat-square&logo=circleci
+[badge-crowdin]: https://badges.crowdin.net/mask-network/localized.svg
 [badge-firefox]: https://img.shields.io/amo/v/maskbook?label=Firefox%20store&style=flat-square
 [badge-fossa]: https://app.fossa.io/api/projects/git%2Bgithub.com%2FDimensionDev%2FMaskbook.svg?type=shield
 [badge-gitter]: https://badges.gitter.im/Maskbook/community.svg
@@ -64,9 +66,10 @@ Help us by donating us:
 [client-firefox]: https://addons.mozilla.org/en-US/firefox/addon/maskbook/
 [client-ios]: https://testflight.apple.com/join/OGmGmIg1
 [bounty]: https://github.com/DimensionDev/Maskbook/issues?q=is%3Aopen+is%3Aissue+label%3A%22Bounty%3A+Open%22
-[license]: https://github.com/DimensionDev/Maskbook/blob/master/LICENSE
 [circle-ci]: https://circleci.com/gh/DimensionDev/Maskbook
-[fossa]: https://app.fossa.io/projects/git%2Bgithub.com%2FDimensionDev%2FMaskbook
+[crowdin]: https://crowdin.com/project/mask-network
 [fossa-status]: https://app.fossa.io/api/projects/git%2Bgithub.com%2FDimensionDev%2FMaskbook.svg?type=large
+[fossa]: https://app.fossa.io/projects/git%2Bgithub.com%2FDimensionDev%2FMaskbook
 [gitter]: https://gitter.im/Maskbook/community
+[license]: https://github.com/DimensionDev/Maskbook/blob/master/LICENSE
 [report-bug]: https://github.com/DimensionDev/Maskbook/issues/new?template=bug.md&assignees=jack-works&projects=DimensionDev/Maskbook/3&title=%5BBug%5D%20&labels=Type%3A%20Bug

docs/i18n-guide.md

@@ -1,5 +1,7 @@
 # Internationalization Guide (i18n guide)
 
+[![Crowdin](https://badges.crowdin.net/mask-network/localized.svg)](https://crowdin.com/project/mask-network)
+
 > We're currently not accepting new language support in Mask Network.
 
 ## Submit community translation