Update to gradle 1.8
diff --git a/build.gradle b/build.gradle
index 222f9e8..e6d738e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -98,4 +98,8 @@
     dependencies {
         classpath 'org.eclipse.jgit:org.eclipse.jgit:2.0.0.201206130900-r'
     }
+}
+
+task wrapper(type: Wrapper) {
+    gradleVersion = '1.8'
 }
\ No newline at end of file