* Update README with new maven version to use (#262)

* * Update README with new maven version to use
* Credentials provider is not supported in the new revision. Removed the reference

* * Add maven version badge instead of hardcoding the version

* * Add maven version so that it is easy to integrate into POM

* * Add maven version so that it is easy to integrate into POM

Co-authored-by: AsafMah <asafmahlev@microsoft.com>

README.md

@@ -18,14 +18,16 @@ This library contains 3 different modules:
 
 ## Maven
 
-This method is the easiest to follow, just add the following dependency to your pom.xml:
+This method is the easiest to follow, just add the following dependency to your pom.xml (with the right version tag from maven central):
 ```xml
 <dependency>
     <groupId>com.microsoft.azure.kusto</groupId>
     <artifactId>kusto-ingest</artifactId>
-    <version>2.1.2</version>
+    <version>[see badge below]</version>
 </dependency>
 ```
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.microsoft.azure.kusto/kusto-ingest/badge.svg?style=plastic)](https://maven-badges.herokuapp.com/maven-central/com.microsoft.azure.kusto/kusto-ingest)
+
 
 ## Clone
 Download the source code, compile and install locally.
@@ -58,7 +60,6 @@ Alternatively, you can define a proxy programmatically when creating a client, u
 ```java
 HttpClientProperties httpClientProperties = HttpClientProperties.builder()
         .proxy(new HttpHost("1.2.3.4", 8989))
-        .credentialsProvider(credentialsProvider)
         .build();
 
 Client = ClientFactory.createClient(<engine_connection_string>, httpClientProperties);