added missing test dependency to Google GSON

make travis test against JDK7 (openjdk7 and oraclejdk7)

.travis.yml

@@ -1,3 +1,4 @@
 language: java
 jdk:
-  - openjdk6
+  - openjdk7
+  - oraclejdk7

pom.xml

@@ -2,7 +2,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <properties>
-        <neo4j.version>1.9.M04</neo4j.version>
+        <neo4j.version>1.9-SNAPSHOT</neo4j.version>
         <neo4j.graphcollections.version>0.5</neo4j.graphcollections.version>
         <geotools.version>8.4</geotools.version>
         <spatial.test.osm.version>20100819</spatial.test.osm.version>
@@ -16,7 +16,7 @@
     <parent>
         <artifactId>parent-central</artifactId>
         <groupId>org.neo4j.build</groupId>
-        <version>36</version>
+        <version>39</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>neo4j-spatial</artifactId>
@@ -222,6 +222,12 @@
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.2.2</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>com.sun.jersey</groupId>
             <artifactId>jersey-client</artifactId>