Documentation directory structure updates

Author: yohangz

README.md

@@ -41,7 +41,7 @@ Read more @ http://bit.ly/2AStvhK
 ## Complete Directory Layout
 
 ```
-├── /app/ # The backend (java) application sources (controllers, models, views, assets)
+├── /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
@@ -50,11 +50,10 @@ Read more @ http://bit.ly/2AStvhK
 │ └── application.log # Default log file
 ├── /project/ # Sbt configuration files
 │ ├── FrontendCommands.scala # Frontend build commands
-│ ├── FrontendRunHook.scala # Frontend build play run hook
+│ ├── FrontendRunHook.scala # Forntend build PlayRunHook (trigger frontend serve on sbt run)
 │ ├── build.properties # Marker for sbt project
 │ └── plugins.sbt # Sbt plugins declaration
-├── /public/ # Public assets
-│ └── /ui/ # Frontend build assests
+├── /public/ # Frontend build artifacts will be copied to this directory
 ├── /target/ # Generated stuff
 │ ├── /universal/ # Application packaging
 │ └── /web/ # Compiled web assets
@@ -72,7 +71,7 @@ Read more @ http://bit.ly/2AStvhK
 ├── 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
+└── ui-build.sbt # Associated frontend build scripts with sbt
 ```
 
 ## What is new in here?