README update

README.md

@@ -12,12 +12,11 @@
 
 # Modules
 
-Click a module to see the Gradle dependency and a how-to document.
+The core module is the fundamental module that you need in order to use this library. The others 
+are extensions to core.
 
 ## Core
 
-
-
 [ ![Core](https://img.shields.io/bintray/v/drummer-aidan/maven/material-dialogs:core.svg?label=core) ](https://bintray.com/drummer-aidan/maven/material-dialogs%3Acore/_latestVersion)
 
 #### [Core Tutorial and Samples](documentation/CORE.md)