Bumped to 2.1.0

Author: rjrudin

CONTRIBUTING.md

@@ -89,7 +89,7 @@ This will produce a single jar file for the connector in the `./build/libs` dire
 
 You can then launch PySpark with the connector available via:
 
-    pyspark --jars build/libs/marklogic-spark-connector-2.1-SNAPSHOT.jar
+    pyspark --jars build/libs/marklogic-spark-connector-2.1.0.jar
 
 The below command is an example of loading data from the test application deployed via the instructions at the top of 
 this page. 

build.gradle

@@ -8,7 +8,7 @@ plugins {
 }
 
 group 'com.marklogic'
-version '2.1-SNAPSHOT'
+version '2.1.0'
 
 java {
   sourceCompatibility = 1.8