Update README

Author: sgugger

README.md

@@ -1,37 +1,3 @@
 # fastai_dev
 
-This repo is used for fastai development. fastai v2 is being developed in the `dev` folder. Docs are at http://dev.fast.ai .
-
-## Installation
-
-You can get all the necessary dependencies by simply installing fastai v1: `conda install -c fastai -c pytorch fastai`. Or alternatively you can automatically install the dependencies into a new environment:
-
-```bash
-cd fastai_dev
-conda env create -f environment.yml
-```
-
-Then, you can install fastai v2 with pip: `pip install git+https://github.com/fastai/fastai_dev`. Or clone this repo, cd to its directory, and `pip install -e .` for an *editable install* (which is probably the best approach at the moment, since fastai v2 is under heavy development).
-
-To use `fastai2.medical.imaging` you'll also need to:
-
-```bash
-conda install pyarrow
-pip install pydicom kornia opencv-python scikit-image
-```
-
-## Tests
-
-To run the tests in parallel, do something like this:
-
-```bash
-tools/test_nbs
-```
-
-## Contributing
-
-After you clone this repository, please run `tools/run-after-git-clone` in your terminal. This sets up git hooks, which clean up the notebooks to remove the extraneous stuff stored in the notebooks (e.g. which cells you ran) which causes unnecessary merge conflicts.
-
-Before submitting a PR, check that the local library and notebooks match. The script `diff_nb_script.py` can let you know if there is a difference between the local library and the notebooks.
-* If you made a change to the notebooks in one of the exported cells, you can export it to the library with `notebook2script.py`.
-* If you made a change to the library, you can export it back to the notebooks with `script2notebook.py`.
+This repo is used for fastai development. If you're looking for the version 2 of the fastai library, go [here](https://github.com/fastai/fastai2).