init project

build.gradle

@@ -0,0 +1,22 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.4.1'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        maven { url "https://jitpack.io" }
+        google()
+    }
+}
+
+ext{
+    support_version='26.1.0'
+}