CL-1543 | Update README.md file

Author: dhruvparekh12

README.md

@@ -38,3 +38,75 @@ Run cloud functions locally
 ```
 
 <!-- commandsstop -->
+
+
+
+# How to test Changes Locally?
+- Branch out from development for development.
+- Install npm: @contentstack/cli 
+- Set region and log in using csdx config:set:region & csdx login
+
+`node bin/dev <command-name>`
+
+OR
+
+`npm  run prepack`
+
+
+`node bin/run <command-name>`
+
+OR
+
+
+```
+npm run prepack
+
+csdx plugins:link <plugin local path>
+
+csdx <command-name>
+```
+
+
+# Release & SRE Process:- 
+
+Version Increment:
+
+Patch version update (fixes): 1.0.0 → 1.0.1
+
+Minor version update (enhancements): 1.0.0 → 1.1.0
+
+Major version update (breaking changes): 1.0.0 → 2.0.0
+
+## For release:
+
+- Raise a draft pull request (PR) from the development branch to the main branch.
+
+### Pre-release SRE Preparation:
+
+- Create an SRE ticket a week before the release date, including the PR.
+
+- After the SRE review, address any identified issues and create tickets for any new issues. 
+
+- Request SRE approval if no issues are identified or after fixing all the SRE-raised issues.
+
+### CAB Approval:
+
+- For CAB, prepare deployment plan sheets(including publish & rollback plan).
+
+- Once SRE approves, raise the request for CAB(SRE ticket, deployment plan, release tickets, release notes). At least two CAB approvals are required.
+
+- Obtain approval for the PR from the security admin (Aravind) and launch admin.
+
+### Merge and Release:
+
+- After getting the necessary approvals, merge the PR. This will trigger the publishing process on npm and GitHub, which can be tracked through the actions & github released tags.
+
+ 
+
+### How will changes be reflected in the CLI ?
+If a patch or minor version of the launch is released, users will need to update or install the latest CLI version, which will automatically include the latest launch version.
+`npm i -g @contentstack/cli`
+     OR
+`npm update -g @contentstack/cli`
+
+ However, if a major version of the launch is released, a version bump is also required in CLI(Steps will be like this launch version bump -> cli version bump -> testing -> release).