[skip ci] updated contributing and readme (#93)

* [skip ci] updated contributing

* [skip ci] Updated readme

Author: vfdev-5

CONTRIBUTING.md

@@ -71,7 +71,7 @@ This allows to run and debug the generated templates from the `dist` folder.
 
 ## Pull Request Guidelines
 
-- Checkout a topic branch from a base branch, e.g. `master`.
+- Checkout a topic branch from a base branch, e.g. `dev`.
 
 - If adding a new template:
 
@@ -120,6 +120,6 @@ Now you can get the latest development into your forked repository with this:
 
 ```sh
 git fetch --all --prune
-git checkout master
-git merge upstream/master
+git checkout dev
+git merge upstream/dev
 ```

README.md

@@ -1,6 +1,6 @@
 [![Streamlit App][streamlit-img]][streamlit-url]
 [![ci][gha-img]][gha-url]
-[![Preview App][aws-img]][aws-url]
+<!-- [![Preview App][aws-img]][aws-url] -->
 
 # Code Generator
 
@@ -24,8 +24,8 @@ Development of this project is supported by NumFOCUS Small Development Grant. We
 
 [BSD 3-Clause](LICENSE)
 
-[aws-img]: https://badgen.net/badge/%20/Deployed%20master%20version/ee4c2c?label=
-[aws-url]: http://pytorch-ignite-code-generator-dev.eu-west-3.elasticbeanstalk.com/
+<!-- [aws-img]: https://badgen.net/badge/%20/Deployed%20master%20version/ee4c2c?label= -->
+<!-- [aws-url]: http://pytorch-ignite-code-generator-dev.eu-west-3.elasticbeanstalk.com/ -->
 [gha-img]: https://github.com/pytorch-ignite/code-generator/actions/workflows/ci.yml/badge.svg
 [gha-url]: https://github.com/pytorch-ignite/code-generator/actions/workflows/ci.yml
 [streamlit-img]: https://static.streamlit.io/badges/streamlit_badge_black_white.svg