revise pregelix-benchmark
diff --git a/pregelix/pregelix-benchmark/pom.xml b/pregelix/pregelix-benchmark/pom.xml
index 4d7d456..df262df 100644
--- a/pregelix/pregelix-benchmark/pom.xml
+++ b/pregelix/pregelix-benchmark/pom.xml
@@ -12,6 +12,23 @@
<artifactId>pregelix-benchmark</artifactId>
<name>pregelix-benchmark</name>
<url>http://maven.apache.org</url>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>2.0.2</version>
+ <configuration>
+ <source>1.7</source>
+ <target>1.7</target>
+ <fork>true</fork>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+
<dependencies>
<dependency>
<groupId>junit</groupId>