added guava dependency

Author: jarlehansen

pom.xml

@@ -16,6 +16,7 @@
         <jackson.version>2.8.8</jackson.version>
         <lombok.version>1.16.16</lombok.version>
         <reflections.version>0.9.11</reflections.version>
+        <guava.version>22.0</guava.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
@@ -66,6 +67,11 @@
             <artifactId>reflections</artifactId>
             <version>${reflections.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>