docs: Updated README.md for dart define instructions (#153)

Author: utpal-barman

README.md

@@ -1,20 +1,31 @@
 # App name - Flutter
 
 ## 📖 Project description
+
 This project serves as a template project for Flutter applications. You can generate a new repository by clicking "Use this template" above.
 
 ## 🔧 Setup and Installation
+
 - Execute `$ flutter doctor` to verify installations
 - Execute `$ pub get` to pull project dependencies
 - Execute a run configuration of choice
-  - `$ flutter run --flavor staging -t lib/main_staging.dart`
-  - `$ flutter run --flavor production -t lib/main_production.dart`
+  - `$ flutter run --flavor development -t lib/main_development.dart --dart-define-from-file=lib/config/dart_define_keys/dart_define_development_keys.json`
+  - `$ flutter run --flavor staging -t lib/main_staging.dart --dart-define-from-file=lib/config/dart_define_keys/dart_define_staging_keys.json`
+
+⚠️ **Running the Production Flavor**
+
+It is **not recommended** to run the production flavor directly from the IDE
+(VS Code or Android Studio) as it may be run by mistake. For ease and accuracy,
+it is advised to run flavors via the **VS Code launch menu** or the **Android
+Studio Run menu** instead.
 
 ## 🌲 Branches
-* `master` - Latest version in the app store.
-* `develop` - Default. Feature branches are merged in when complete and then deleted.
+
+- `master` - Latest version in the app store.
+- `develop` - Default. Feature branches are merged in when complete and then deleted.
 
 ## 🔗 Useful links
+
 - [Jira Board](https://TODO)
 - [Confluence](https://TODO)
 - [Slack Channel](https://TODO)