Fixed Android play-services version references.

Author: jkasten2

package.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.8.0",
+  "version": "1.8.1",
   "name": "onesignal-cordova-plugin",
   "cordova_name": "OneSignal Push Notifications",
   "description": "OneSignal is a high volume Push Notification service for mobile apps. In addition to basic notification delivery, OneSignal also provides tools to localize, target, schedule, and automate notifications that you send.",

plugin.xml

@@ -2,7 +2,7 @@
 <plugin xmlns="http://www.phonegap.com/ns/plugins/1.0"
     xmlns:android="http://schemas.android.com/apk/res/android"
     id="com.onesignal.plugins.onesignal"
-    version="1.8.0">
+    version="1.8.1">
 
   <name>OneSignal Push Notifications</name>
   <author>Josh Kasten</author>
@@ -22,8 +22,8 @@
   </engines>
 
   <platform name="android">
-    <framework src="com.google.android.gms:play-services-gcm:7.3.+" />
-    <framework src="com.google.android.gms:play-services-analytics:7.3.+" />
+    <framework src="com.google.android.gms:play-services-gcm:7.3.0" />
+    <framework src="com.google.android.gms:play-services-analytics:7.3.0" />
 
     <config-file target="res/xml/config.xml" parent="/*">
       <feature name="OneSignalPush" >