Add directory structure and newly added features sections in README.md.

Author: lahiruz

README.md

@@ -20,7 +20,7 @@
 
 * Clone the application and open application as a sbt project.
 
-* This application is not using any of the java play views and all the views are served by the [Angular](https://angular.io/) code base which is inside the `ui` folder.
+* This application is not using any of the scala play views and all the views are served by the [Angular](https://angular.io/) code base which is inside the `ui` folder.
 
 * Used any of the sbt commands listed in the below according to the requirement which are working fine with this application.(To see more details of [sbt](http://www.scala-sbt.org/))
 
@@ -35,6 +35,83 @@
     
     sbt test            # Run both backend and frontend unit tests 
 ```  
+
+## Complete Directory Layout
+
+```
+├── /app/                       # The backend (scala) application sources (controllers, models, views, assets)
+├── /conf/                      # Configurations files and other non-compiled resources (on classpath)
+│     ├── application.conf      # Builds the project from source to output(lib and bower) folder
+│     ├── logback.xml           # Logging configuration
+│     └── routes                # Routes definition
+├── /logs/                      # Logs folder
+│     └── application.log       # Default log file
+├── /project/                   # Sbt configuration files
+│     ├── AngularBuild.scala    # PlayRunHook file to trigger angular serve with sbt run
+│     ├── build.properties      # Marker for sbt project
+│     └── plugins.sbt           # Sbt plugins declaration
+├── /public/                    # Public assets
+│     └── /ui/                  # Frontend build assests
+├── /target/                    # Generated stuff
+│     ├── /universal/           # Application packaging
+│     └── /web/                 # Compiled web assets
+├── /test/                      # Contains unit tests for scala play sources
+├── /ui/                        # Angular front end sources
+│     ├── /e2e/                 # End to end tests folder
+│     ├── /node_modules/        # 3rd-party frontend libraries and utilities
+│     ├── /src/                 # The frontend source code (modules, componensts, models, directives, services etc.) of the application
+│     ├── .angular-cli.json     # Builds the project from source to output(lib and bower) folder
+│     ├── .editorconfig         # Define and maintain consistent coding styles between different editors and IDEs
+│     ├── .gitignore            # Contains ui files to be ignored when pushing to git
+│     ├── karma.conf.js         # Karma configuration file
+│     ├── package.json          # Holds various metadata configuration relevant to the ui
+│     ├── protractor.conf.js    # Protractor configuration file
+│     ├── proxy.conf.json       # UI proxy configuration
+│     ├── README.md             # Contains all user guide details for the ui
+│     ├── tsconfig.json         # Contains typescript compiler options
+│     └── tslint.json           # Lint rules for the ui
+├── .gitignore                  # Contains files to be ignored when pushing to git
+├── build.sbt                   # Play application build script
+├── LICENSE                     # Contains License Agreement file
+├── README.md                   # Contains all user guide details for the application
+└── ui-build.sbt                # UI build scripts
+```
+
+## What is new in here?
+
+### AngularBuild.scala
+
+* Represents PlayRunHook scala implementation to trigger angular serve with sbt run command.
+
+```
+    ├── /project/
+    │     ├── AngularBuild.scala
+```
+
+### ui-build.sbt
+
+* `ui-build.sbt` file to represent UI builds scrips implementations to run along with the available sbt commands.
+* This file is located in the root level of the project to work smoothly with the `build.sbt` file.
+
+### npm run commands
+
+* Added several new npm run commands in the `scripts` section of the package.json file in order to work smoothly with the sbt commands.
+* Check [UI README.md](./ui/README.md) to see the available front end build tasks.
+
+```
+├── /ui/
+│     ├── package.json
+```
+
+### proxy.conf.json
+
+* Contains proxy configurations required to run application in watch mode along with both `Scala` and `Angular` builds.
+
+```
+├── /ui/
+│     ├── proxy.conf.json
+```
+
 ## Routes
 
 ```