Update README.md

Author: fractalwrench

README.md

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 # Json2Kotlin
 
+View the project in action at [json2kotlin.co.uk](http://json2kotlin.co.uk/)
+
+## About
+
 As you've probably guessed by now, this project automatically converts JSON to Kotlin source files. 
 The tool itself is implemented 100% in Kotlin, and makes heavy use of Square's excellent [KotlinPoet](https://github.com/square/kotlinpoet) library.