Add blog to readme

(cherry picked from commit d949252)

Author: deliahu

README.md

@@ -3,7 +3,7 @@
 
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-[Install](https://docs.cortexlabs.com/cortex/install) • [Quick Start](https://docs.cortexlabs.com/cortex/quick-start) • [Demo Video](https://www.youtube.com/watch?v=vcistUor0b4) • <!-- CORTEX_VERSION_MINOR_STABLE e.g. https://docs.cortex.dev/v/0.2/ -->[Docs](https://docs.cortex.dev/v/0.3/) • <!-- CORTEX_VERSION_MINOR_STABLE -->[Examples](https://github.com/cortexlabs/cortex/tree/0.3/examples) • [FAQ](https://docs.cortexlabs.com/cortex/faq) • [Newsletter](https://cortexlabs.us20.list-manage.com/subscribe?u=a1987373ab814f20961fd90b4&id=ae83491e1c) • [Gitter](https://gitter.im/cortexlabs/cortex)
+[Install](https://docs.cortexlabs.com/cortex/install) • [Quick Start](https://docs.cortexlabs.com/cortex/quick-start) • [Demo Video](https://www.youtube.com/watch?v=vcistUor0b4) • <!-- CORTEX_VERSION_MINOR_STABLE e.g. https://docs.cortex.dev/v/0.2/ -->[Docs](https://docs.cortex.dev/v/0.3/) • <!-- CORTEX_VERSION_MINOR_STABLE -->[Examples](https://github.com/cortexlabs/cortex/tree/0.3/examples) • [FAQ](https://docs.cortexlabs.com/cortex/faq) • [Newsletter](https://cortexlabs.us20.list-manage.com/subscribe?u=a1987373ab814f20961fd90b4&id=ae83491e1c) • [Blog](https://medium.com/cortex-labs) • [Gitter](https://gitter.im/cortexlabs/cortex)
 
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