Proposal open source - Adding support for conversion to WEBP format t…

…o ImgBot (#1919)

* Open-source contribution proposal

* Update missing bulleted list

contributions/open-source/lukasgut-ttle/README.md

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+# Assignment Proposal
+
+## Title
+
+Open-source contribution, adding support for converison to WEBP format
+
+## Names and KTH ID
+
+- Lukas Gutenberg (lukasgut@kth.se)
+- Tony Le (ttle@kth.se)
+
+## Deadline
+
+Task 4
+
+## Category
+
+Contribution to open-source
+
+## Description
+
+ImgBot (#310) crawls through all of the image files in a GitHub repo and losslessly compresses them. Once it is done, it opens a PR for review and merging. The community is pretty active, it has 893 stars as well as over 1000 commits.
+
+Support for conversion to WEBP format is a feature that is requested in this issue: https://github.com/imgbot/Imgbot/issues/1049
+
+We intend to implement this feature, as well as update the documentation accordingly to properly explain how to enable / disable it.