docs: base README.md introduction to the space

README.md

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 title: README
-emoji: 🐠
+emoji: 💠
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 colorTo: indigo
-sdk: static
+sdk: streamlit
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-Edit this `README.md` markdown file to author your organization card 🔥
+Welcome to our space! 🎊
+
+The [Unstructured.io](www.unstructured.io) Team provides libraries with open-source components for pre-processing text documents
+such as **PDFs**, **HTML** and **Word** Documents. These components are packaged as *bricks* 🧱, which provide
+users the building blocks they need to build pipelines targeted at the documents they care
+about. Bricks in the library fall into three categories:
+
+- 🧩 ***Partitioning bricks*** that break raw documents down into standard, structured
+  elements.
+- 🧹 ***Cleaning bricks*** that remove unwanted text from documents, such as boilerplate and
+  sentence
+  fragments.
+- 🎭 ***Staging bricks*** that format data for downstream tasks, such as ML inference
+  and data labeling.
+
+In this space we explore different settings of deep-learning models fine-tuned with several datasets containing a
+specific document type and corresponding annotations.
+
+Main GitHub repository link: [here](https://github.com/Unstructured-IO/unstructured)