Move jcenter() down after maven

Change-Id: I2150798c13b776331f064f387eec290e535793d6
diff --git a/build.gradle b/build.gradle
index 78d416c..6523153 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,10 +12,10 @@
 buildscript {
     repositories {
         mavenCentral()
-        jcenter()
         maven {
             url "https://plugins.gradle.org/m2/"
         }
+        jcenter()
     }
     dependencies {
         classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.4'