Copy acknowledgements to README.md from about page
Copy acknowledgements to README.md from about page

Summary: Just nice to mention React and RethinkDB in our README

Test Plan: *fingers crossed*

Reviewers: xymostech, spicyj

Reviewed By: spicyj

Differential Revision: http://phabricator.benalpert.com/D216

vim-awesome/vim-awesome,divad12/vim-awesome,jonafato/vim-awesome,vim-awesome/vim-awesome,vim-awesome/vim-awesome,starcraftman/vim-awesome,jonafato/vim-awesome,jonafato/vim-awesome,vim-awesome/vim-awesome,shaialon/vim-awesome,shaialon/vim-awesome,divad12/vim-awesome,divad12/vim-awesome,shaialon/vim-awesome,vim-awesome/vim-awesome,shaialon/vim-awesome,starcraftman/vim-awesome,divad12/vim-awesome,starcraftman/vim-awesome,starcraftman/vim-awesome,jonafato/vim-awesome