Merge pull request zo0r#826 from receme/master

updated sdk and build tool version on gradle file

Author: Gp2mv3

android/build.gradle

@@ -15,10 +15,10 @@ allprojects {
 
 apply plugin: 'com.android.library'
 
-def DEFAULT_COMPILE_SDK_VERSION = 23
-def DEFAULT_BUILD_TOOLS_VERSION = "23.0.1"
-def DEFAULT_TARGET_SDK_VERSION = 23
-def DEFAULT_SUPPORT_LIB_VERSION = "23.1.1"
+def DEFAULT_COMPILE_SDK_VERSION = 27
+def DEFAULT_BUILD_TOOLS_VERSION = "27.0.3"
+def DEFAULT_TARGET_SDK_VERSION = 27
+def DEFAULT_SUPPORT_LIB_VERSION = "27.1.1"
 def DEFAULT_GOOGLE_PLAY_SERVICES_VERSION = "+"
 def DEFAULT_FIREBASE_MESSAGING_VERSION = "+"