add mavencentral as repository (before jcenter) (#1134)

Author: cmonfortep

build.gradle

@@ -12,6 +12,7 @@ buildscript {
 
     repositories {
         google()
+        mavenCentral()
         jcenter()
     }
     dependencies {
@@ -28,6 +29,7 @@ buildscript {
 allprojects {
     repositories {
         google()
+        mavenCentral()
         jcenter()
     }
 }