chore: adhere to naming convention (#14)

Author: dated

README.md

@@ -1,10 +1,10 @@
-# ARK Java - Client
+# Ark Java - Client
 
 <p align="center">
     <img src="https://github.com/ArkEcosystem/java-client/blob/master/banner.png" />
 </p>
 
-> A simple Java API client for the ARK Blockchain.
+> A simple Java API client for the Ark Blockchain.
 
 [![Build Status](https://badgen.now.sh/circleci/github/ArkEcosystem/java-client)](https://circleci.com/gh/ArkEcosystem/java-client)
 [![Codecov](https://badgen.now.sh/codecov/c/github/arkecosystem/java-client)](https://codecov.io/gh/arkecosystem/java-client)