Use published artifact for IoT (#874)

* Updates instructions for jar installation

* Uses published client library

Author: gguuss

iot/api-client/manager/README.md

@@ -6,14 +6,6 @@ Note that before you can run the sample, you must configure a Google Cloud
 PubSub topic for Cloud IoT as described in [the parent README](../README.md).
 
 ## Setup
-
-Manually install [the provided client library](https://cloud.google.com/iot/resources/java/cloud-iot-core-library.jar)
-for Cloud IoT Core to Maven:
-
-     mvn install:install-file -Dfile=cloud-iot-core-library.jar -DgroupId=com.google.apis \
-    -DartifactId=google-api-services-cloudiot -Dversion=v1beta1-rev20170926-1.22.0-SNAPSHOT \
-    -Dpackaging=jar
-
 Run the following command to install the libraries and build the sample with
 Maven:
 

iot/api-client/manager/pom.xml

@@ -40,7 +40,7 @@
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-cloudiot</artifactId>
-      <version>v1beta1-rev20170926-1.22.0-SNAPSHOT</version>
+      <version>v1-rev20170922-1.22.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>