Update gradle files.

app/build.gradle

@@ -34,7 +34,7 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
 
     implementation project(':player')
 
@@ -84,15 +84,11 @@ dependencies {
     implementation libraries.textDrawable
 
     testImplementation libraries.junit
-    androidTestImplementation (libraries.expressoCore , {
+    androidTestImplementation(libraries.expressoCore, {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
 }
 
-repositories {
-    mavenCentral()
-}
-
 kotlin {
     experimental {
         coroutines "enable"
@@ -104,4 +100,4 @@ kotlin {
 task compileSdk(type:Exec) {
     commandLine './build-sdk.sh'
 }
-preBuild.dependsOn compileSdk
+preBuild.dependsOn compileSdk
\ No newline at end of file

build.gradle

@@ -5,6 +5,7 @@ buildscript {
     repositories {
         google()
         jcenter()
+        mavenCentral()
     }
 
     dependencies {