Mention References for Flow and TypeScript

[niieani]

Flow:

• https://medium.com/@raxwunter/secret-flow-types-86b2ebb30951#.u7j5ieab3
• https://github.com/facebook/flow/blob/master/src/typing/type_annotation.ml#L163
• http://www.saltycrane.com/blog/2016/06/flow-type-cheat-sheet/
• https://twitter.com/nodkz/status/870629967738155010
• https://www.youtube.com/watch?v=WgvAPzOmiP0
• https://qiita.com/coizmo/items/21578b7d13819bb26fc3#_reference-d4f1712e3e2a18b823ef
• https://qiita.com/kinzal/items/e1898c89af5618e18334#_reference-afb4a1e9c90d42e7cc28
• https://qiita.com/kinzal/items/8e2978be3ec78663c70b#_reference-5b1da19d077e0f5e7bfe

Both:

• https://redditblog.com/2017/06/30/why-we-chose-typescript/

[chrisgervang]

https://slack.engineering/typescript-at-slack-a81307fa288d https://javascript.tumblr.com/post/165082071937/flow-and-typescript https://eng.lyft.com/typescript-at-lyft-64f0702346ea https://blog.asana.com/2014/11/asana-switching-typescript/