GCM API wrapper for Java which includes exponential back-off implementation in case of temporary call failures
'io.sprucehill:google-cloud-messaging-api-wrapper:0.3.0'
<dependency>
<groupId>io.sprucehill</groupId>
<artifactId>google-cloud-messaging-api-wrapper</artifactId>
<version>0.3.0</version>
</dependency>
<dependency org="io.sprucehill" name="google-cloud-messaging-api-wrapper" rev="0.3.0"/>
"io.sprucehill", "google-cloud-messaging-api-wrapper", "0.3.0"