Downgrading to Java 1.7

Necessary to keep compatibility with Android

Change-Id: I6520dc649cb1b44f61a8cb7bc054eda7d818082c
diff --git a/pom.xml b/pom.xml
index bea6767..7da99dc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,8 +27,8 @@
   </scm>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.8</maven.compiler.source>
-    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>1.7</maven.compiler.source>
+    <maven.compiler.target>1.7</maven.compiler.target>
   </properties>
   <dependencies>
     <dependency>
@@ -151,4 +151,4 @@
       </build>
     </profile>
   </profiles>
-</project>
\ No newline at end of file
+</project>