prepare build.gradle for kotlin switch.

build.gradle

@@ -12,29 +12,29 @@ buildscript {
 }
 
 ext {
-  androidGradlePluginVersion = '3.3.0'
+  set("androidGradlePluginVersion", "3.3.0")
-  testdroidGradlePluginVersion = '2.63.0'
+  set("testdroidGradlePluginVersion", "2.63.0")
-  appCompatVersion = '1.0.2'
+  set("appCompatVersion", "1.0.2")
-  materialVersion = '1.0.0'
+  set("materialVersion", "1.0.0")
-  annotationVersion = '1.0.0'
+  set("annotationVersion", "1.0.0")
-  cardViewVersion = '1.0.0'
+  set("cardViewVersion", "1.0.0")
-  rxJavaVersion = '2.2.5'
+  set("rxJavaVersion", "2.2.5")
-  rxAndroidVersion = '2.1.0'
+  set("rxAndroidVersion", "2.1.0")
-  okHttpVersion = '3.12.1'
+  set("okHttpVersion", "3.12.1")
-  retrofitVersion = '2.5.0'
+  set("retrofitVersion", "2.5.0")
-  javaxAnnotationVersion = '1.3.2'
+  set("javaxAnnotationVersion", "1.3.2")
-  daggerVersion = '2.16'
+  set("daggerVersion", "2.16")
-  inkPageIndicatorVersion = '1.3.0'
+  set("inkPageIndicatorVersion", "1.3.0")
-  constraintLayoutVersion = '1.1.3'
+  set("constraintLayoutVersion", "1.1.3")
-  butterKnifeVersion = '10.0.0'
+  set("butterKnifeVersion", "10.0.0")
-  espressoVersion = '3.1.1'
+  set("espressoVersion", "3.1.1")
-  apacheCommonsVersion = '2.6'
+  set("apacheCommonsVersion", "2.6")
-  multidexVersion = '2.0.1'
+  set("multidexVersion", "2.0.1")
-  jUnitVersion = '4.12'
+  set("jUnitVersion", "4.12")
-  mockitoVersion = '2.19.1'
+  set("mockitoVersion", "2.19.1")
-  powerMockVersion = '1.6.6'
+  set("powerMockVersion", "1.6.6")
-  powerMockJUnitVersion = '1.7.4'
+  set("powerMockJUnitVersion", "1.7.4")
-  baristaVersion = '2.7.1'
+  set("baristaVersion", "2.7.1")
 }
 
 allprojects {

settings.gradle

@@ -1 +1 @@
-include ':app', ':kiwixlib'
+include(":app", ":kiwixlib")