Add the initial README.md

README.md

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-# Mojo
-The Mojo Programming Language
+# Welcome to Mojo
+
+Mojo is a new programming language that bridges the gap between research 
+and production by combining Python syntax and ecosystem with systems 
+programming and metaprogramming features. Mojo is still early, but it is designed
+to become a superset of 
+Python over time. This will allow Python's dynamic features to continue
+to shine but also unleash Python from the shackles of C and C++ under the hood.
+
+We expect Mojo to be open-sourced progressively over time, but for now it's still 
+young and changing very quickly. We believe that a small,tight-knit group of 
+engineers with a shared vision can move faster than a community effort, so we will
+continue to incubate it within Modular until it's more complete. Please see the 
+[Mojo FAQ](https://docs.modular.com/mojo/faq.html) for answers to this and other 
+common questions. 
+
+We've opened this repo now because we want to gather issues and engage in feedback 
+from users who have access to the Mojo Playground (our hosted JupyterHub
+where you can try coding with an early version of Mojo). To get access to the
+Mojo Playground, [see here to sign up](https://docs.modular.com/mojo/get-started.html).
+Then, when you want to report issues or request features,
+[please create a GitHub issue here](https://github.com/modularml/mojo/issues).
+
+For more general questions or to chat with other Mojo developers,
+check out our [Discord](https://discord.gg/modular) 
+
+Otherwise, you can:
+- Read the [inspiration behind Mojo](https://docs.modular.com/mojo/why-mojo.html).
+- Check out the [Mojo programming manual](https://docs.modular.com/mojo/programming-manual.html).
+- Many other docs on [docs.modular.com](https://docs.modular.com).