Changes Read Me to show 0.23 for new Maven pom version

Author: Chris Wilson

README.md

@@ -27,7 +27,7 @@ The SparkPost Java Library is available in this [Maven Repository](https://repo.
 <dependency>
 	<groupId>com.sparkpost</groupId>
 	<artifactId>sparkpost-lib</artifactId>
-	<version>0.21</version>
+	<version>0.23</version>
 </dependency>
 ```
 

tools/bin/collectJars.sh

@@ -3,7 +3,7 @@
 # Do everything relative to the tools/bin directory
 cd "$(dirname $0)"
 
-VERSION=0.22
+VERSION=0.23
 
 cd ../..