Add branch policy (#1805)

* update readme file

* update readme file

* update readme file with how to contribute

* update readme file with how to contribute

* update readme file with branch Policy

---------

Co-authored-by: Rajan Maurya <therajanmaurya@users.noreply.github.com>

README.md

@@ -23,31 +23,7 @@ Development | Chat |
 Mifos boasts an active and vibrant contributor community, Please join us on [slack](https://join.slack.com/t/mifos/shared_invite/zt-2f4nr6tk3-ZJlHMi1lc0R19FFEHxdvng). Once you've joined the mifos slack community, please join the `#mobile-wallet` channel to engage with mobile-wallet development. If you encounter any difficulties joining our Slack channel, please don't hesitate to open an issue. This will allow us to assist you promptly or send you an invitation.
 
 ### [How to Contribute](https://github.com/openMF/mobile-wallet/wiki/How-to-Contribute)
-
-### Branch Policy
-
-
-We have the following branches :
-
- * **dev**
-     All the contributions should be pushed to this branch. If you're making a contribution,
-     you are supposed to make a pull request to _dev_.
-     Please make sure it passes a build check on Travis.
-
-     It is advisable to clone only the development branch using the following command:
-
-     ```
-     git clone -b <branch> <remote_repo>
-     ```
-
-    With Git 1.7.10 and later, add --single-branch to prevent fetching of all branches. Example, with development branch:
-
-     ```
-     git clone -b dev --single-branch https://github.com/username/mobile-wallet.git`
-     ```
-
- * **master**
-   The master branch contains all the stable and bug-free working code. The development branch once complete will be merged with this branch.
+### [Branch Policy](https://github.com/openMF/mobile-wallet/wiki/Branch-Policy)
 
 ### Demo credentials
 Fineract Instance: demo.mifos.io