update links in readme and fairseq2 install

README.md

@@ -16,8 +16,6 @@ The full list of supported languages (along with download links) can be found he
 </p>
 
 
-Model inference support thanks [Fairseq2](https://github.com/fairinternal/fairseq2) (TODO: change for external link once released)
-
 ## Text results
 <p align="center">
   <img src="materials/sonar_text_resulsts.png" width="800"><br />
@@ -30,10 +28,10 @@ Model inference support thanks [Fairseq2](https://github.com/fairinternal/fairse
 
 
 ## Installing
-SONAR depends mainly on [Fairseq2](https://github.com/fairinternal/fairseq2) and can be installed using (tested with `python=3.8`)
+1. Install fairseq2. Follow tutorials in [Fairseq2 repo](https://github.com/facebookresearch/fairseq2).
+2. Install seamless_communication
 ```bash
 pip install --upgrade pip
-pip config set global.extra-index-url https://test.pypi.org/simple/
 pip install -e .
 ```